From nobody Thu Jan 2 16:00:01 2025 X-Original-To: freebsd-hackers@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4YPBHY1P4Rz5jMtV for ; Thu, 02 Jan 2025 16:00:09 +0000 (UTC) (envelope-from himanshu@thechauhan.dev) Received: from mail-pj1-x1030.google.com (mail-pj1-x1030.google.com [IPv6:2607:f8b0:4864:20::1030]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "WR4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4YPBHX3YB1z4XKM for ; Thu, 2 Jan 2025 16:00:08 +0000 (UTC) (envelope-from himanshu@thechauhan.dev) Authentication-Results: mx1.freebsd.org; dkim=pass header.d=thechauhan.dev header.s=google header.b=BD93d0Mr; spf=pass (mx1.freebsd.org: domain of himanshu@thechauhan.dev designates 2607:f8b0:4864:20::1030 as permitted sender) smtp.mailfrom=himanshu@thechauhan.dev; dmarc=none Received: by mail-pj1-x1030.google.com with SMTP id 98e67ed59e1d1-2ee76befe58so15913374a91.2 for ; Thu, 02 Jan 2025 08:00:08 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=thechauhan.dev; s=google; t=1735833606; x=1736438406; darn=freebsd.org; h=content-transfer-encoding:subject:from:to:content-language :user-agent:mime-version:date:message-id:from:to:cc:subject:date :message-id:reply-to; bh=P1+FzEo+Tg+49CgHSzsiW3Qh7fmkYk/PIs3ppty+alA=; b=BD93d0Mr/5Cvi8Hxf6Yx0VxoIjY///hhuWiIdeQWdCM2I3ieGb0s8Ys780zTJsC84G QFzTmv2VM9e0En+aTkv2R79dK+r3mzGqA4p7RdIr8WljyvxyjIxW/LZMvHNsOi2Cc0z6 3Wbib8eqsQOjRnU3bDFkVvUUdLIT07NKGeLX+dFEGrkf9yzpsxpe/KIRIUfi6T/h49OW 5IhKO+k0BRN6/adWlH9xhqmrT3IwgUd+kspsTdFemxCMedLA3kgpIh6/SNxn7+dBaULO nqCkKX6fes4xyE5udQnzIS3f0vZadH1KK+mnHvJ+KwhlkF/88qyHeqZGKgXfw8fsgQzk 7RxQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1735833606; x=1736438406; h=content-transfer-encoding:subject:from:to:content-language :user-agent:mime-version:date:message-id:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=P1+FzEo+Tg+49CgHSzsiW3Qh7fmkYk/PIs3ppty+alA=; b=erUGuTffv/4DI8TuLmJHPoNruy+XFycajvC5lnOy+JWHZ/1jrChHIw2OIScGu6xiiy NAQN0WHpAnrJjBe0c9J1km9p3jjRvC0O7r6hkC8E1ppHC4YgpxYh+hXTX8QtrnDG3l94 jE643Swf5AKe719kIni2WakTB8vJUUzGwviRGKFnonGbby9pLiXdbmjMVC/9mNbpBwC5 2gC0fb7c8Q9LjXTkPACIfe0b5Z53VeXZNXrSDmBjFEboyIbgeOetipSBXMnm/swkIs7T E0oV6aleImiuE+ZVqzvp328cMe0c1rMysC6zvzEpWiTvJMwWbA8xwl3MOv/cFG/yWWiD a4Sw== X-Gm-Message-State: AOJu0YzX/uGKZEtfcthassXqhS7BvI4fKiS1bfpuJZm9mhZxl5xORrxg W1vczmc5GXBJK97vDro6HDh9wMD+ycQSQdoddeM3COtEmlfLwqrS61+O65AiGjHpnAzno2M2AP8 = X-Gm-Gg: ASbGncvr+uLbI3lLeZuZRpqN1UpiX/+o5mZ29a8c9r7BQczLvzE9sCQ2dZ3yPxMuU1J j9MaNY3pbcBqQmo1rwL8E3CWYpaQOLSWXhiHzHJnZw+/re86OFjoMcKJ9rJNgsSBLZkVYd7MeG/ bX5FuYoQsSfkHvUVrDALUnqeBUxHWI2nud5LQ/yW5PWtAje9K4h5FOMQic3jPwk2LJbCYHLygn/ tmi7b8dNrAwxT76gumuOqp7zy3rtgiu/Fq9Q3YG5k0RlU0ru4h47ns= X-Google-Smtp-Source: AGHT+IHF/01SLeC7P/B4cUnL+1mcOKV/ThYk4fyohvYytbu+dKzumdc8GhzjSiBZ9lW4qszvLyq91g== X-Received: by 2002:a17:90b:270d:b0:2ee:6736:8512 with SMTP id 98e67ed59e1d1-2f452e1636emr86887341a91.12.1735833606492; Thu, 02 Jan 2025 08:00:06 -0800 (PST) Received: from [10.0.0.2] ([49.37.251.233]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-2f4da93a04esm3921816a91.11.2025.01.02.08.00.05 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 02 Jan 2025 08:00:06 -0800 (PST) Message-ID: Date: Thu, 2 Jan 2025 21:30:01 +0530 List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@FreeBSD.org MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Content-Language: en-US To: FreeBSD Hackers From: Himanshu Chauhan Subject: Debug sleep issue Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 4YPBHX3YB1z4XKM X-Spamd-Bar: --- X-Spamd-Result: default: False [-3.49 / 15.00]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-1.00)[-0.996]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36]; R_DKIM_ALLOW(-0.20)[thechauhan.dev:s=google]; MIME_GOOD(-0.10)[text/plain]; XM_UA_NO_VERSION(0.01)[]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; ARC_NA(0.00)[]; RCVD_TLS_LAST(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; MIME_TRACE(0.00)[0:+]; RCPT_COUNT_ONE(0.00)[1]; FROM_HAS_DN(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[2607:f8b0:4864:20::1030:from]; RCVD_COUNT_TWO(0.00)[2]; FROM_EQ_ENVFROM(0.00)[]; DMARC_NA(0.00)[thechauhan.dev]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MLMMJ_DEST(0.00)[freebsd-hackers@freebsd.org]; PREVIOUSLY_DELIVERED(0.00)[freebsd-hackers@freebsd.org]; TO_DN_ALL(0.00)[]; DKIM_TRACE(0.00)[thechauhan.dev:+] Hi, I am running FreeBSD 14.2 on an LG Gram 14". Everything works perfectly okay except for bluetooth and sleep. I have found work around for bluetooth and it doesn't bother me much but sleep is an issue. The laptop supports S3 and it goes to sleep with acpiconf. It wakes up to the place where it went sleep but within next 4-5 seconds it just reboots. There are no crashes whatsoever. Any idea how I can go about debugging this issue? Thanks Regards Himanshu P.S.: This with FreeBSD is still my daily driver thanks to Evo and powerd, this laptop runs on battery for a very long time. Almost 7-8 hours and 3-4 hours if I am compiling FreeBSD. From nobody Sat Jan 4 13:35:41 2025 X-Original-To: freebsd-hackers@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4YQM0F0f2tz5kGrN for ; Sat, 04 Jan 2025 13:35:57 +0000 (UTC) (envelope-from chris.torek@gmail.com) Received: from mail-lf1-x12e.google.com (mail-lf1-x12e.google.com [IPv6:2a00:1450:4864:20::12e]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "WR4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4YQM0C4fnzz4Qkh for ; Sat, 4 Jan 2025 13:35:55 +0000 (UTC) (envelope-from chris.torek@gmail.com) Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20230601 header.b="cIRh/gbS"; spf=pass (mx1.freebsd.org: domain of chris.torek@gmail.com designates 2a00:1450:4864:20::12e as permitted sender) smtp.mailfrom=chris.torek@gmail.com; dmarc=pass (policy=none) header.from=gmail.com Received: by mail-lf1-x12e.google.com with SMTP id 2adb3069b0e04-53f22fd6832so14619109e87.1 for ; Sat, 04 Jan 2025 05:35:55 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1735997753; x=1736602553; darn=freebsd.org; h=to:subject:message-id:date:from:mime-version:from:to:cc:subject :date:message-id:reply-to; bh=+438y96tyBwhdcqOrDVT7Qhs88NKaV6qYGNEPUs5B64=; b=cIRh/gbSx2GBBAcs+RLWdu/xddryUGB86gsqV3edjVRGRHS0tzhvUApFEb0HhUlJu7 DRI/Me2nf86Yo/lXvZ5XzA+Hw39O87hatFDvPOQwLIUE7YLsQOtlsS74wtB6iQqOklQ4 umEwRbtU3xMsILY4Xx9WE7yWCJ2a/4A/MRdrzm0WdorcvrYsgJeHUH3m3O/bbnRbIQWR X3NRxmCwXFSCG9VIdE2xESdjBYtS1LAmDDM2wqdFP3+/r0B4feD+e9JwkOWGOx3bngPv q6U6Sl+XJurCtHTvKVrEO+U2pxYxkUdJZLveVXpO2d18Nk8bvAUJeitx3xPyRD4h4AW6 5Erg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1735997753; x=1736602553; h=to:subject:message-id:date:from:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=+438y96tyBwhdcqOrDVT7Qhs88NKaV6qYGNEPUs5B64=; b=UPg7bBnDw9P7THrwtIrpokqr3XxnIMB0Ln5VreBb65N83KYGrqJarbdyViWG1hwFAp FM6Qn62wL/8ygKQxH27l4BqCK/vseNSck8THqr2yXs42q1sC0qHZEPENggZelveJFP5L oKLhpjGxBELiWF2OFV3x6gAlBjOSxGdUw9vPpyyROF79jWUUrKDvCiwovoVGX7gKLHQr +5qpJIHaNWks6oy4VCC8/trURRpmAuwz4AyV3rA8gkbQh0gK2Ymtu6oTWqo6iefu3vRU hUv7PiH4aEljhau2O8gYhtCFZzIR/w6QnYE2ohfwjNJnRc1xUFk0q3tzH8AMZJXnJGP5 W8tw== X-Gm-Message-State: AOJu0YxeAnq+5JJ0RxpIzhCnzfebNQ3+2shG0QWn3WFTcZlTrh5WKlNg oEnV9z9emaYQlMo4ARiAqYL+tjQO5X23mUx4ZLwI4ZxuaRfo12OuLMaewDs/M0Sz9VV7lpuEIWS ElOPxCdpRPbSEy4YePZaMi+jeodgEjOnh X-Gm-Gg: ASbGncvmW/QlYnKehs+UhuOgAxk3rXgaqt78v5KUJpCSfMhojI07sh/lBHq5JsqIIWh S2dKr9TfzjrSaSFv+rfE1lE02W2Tny/eRNdTXzgk= X-Google-Smtp-Source: AGHT+IEzyG578KEhmWaQrzyf9/a5MAreRrfRBpCdrwcBoUmF2YVG34w53xVPOnVEP7EjKzuiSE3xiqlLnEWd2NBmqqI= X-Received: by 2002:a05:6512:33c9:b0:541:1c5f:bf85 with SMTP id 2adb3069b0e04-5422956beeemr13339507e87.50.1735997752526; Sat, 04 Jan 2025 05:35:52 -0800 (PST) List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@FreeBSD.org MIME-Version: 1.0 From: Chris Torek Date: Sat, 4 Jan 2025 05:35:41 -0800 Message-ID: Subject: curious crashes when under memory pressure To: FreeBSD Hackers Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: 4YQM0C4fnzz4Qkh X-Spamd-Bar: --- X-Spamd-Result: default: False [-4.00 / 15.00]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_SHORT(-1.00)[-1.000]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20230601]; R_SPF_ALLOW(-0.20)[+ip6:2a00:1450:4000::/36]; MIME_GOOD(-0.10)[text/plain]; RCVD_TLS_LAST(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; ARC_NA(0.00)[]; FROM_HAS_DN(0.00)[]; MIME_TRACE(0.00)[0:+]; RCPT_COUNT_ONE(0.00)[1]; FREEMAIL_ENVFROM(0.00)[gmail.com]; FREEMAIL_FROM(0.00)[gmail.com]; TO_DN_ALL(0.00)[]; DKIM_TRACE(0.00)[gmail.com:+]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim]; MID_RHS_MATCH_FROMTLD(0.00)[]; PREVIOUSLY_DELIVERED(0.00)[freebsd-hackers@freebsd.org]; FROM_EQ_ENVFROM(0.00)[]; TAGGED_FROM(0.00)[]; MLMMJ_DEST(0.00)[freebsd-hackers@freebsd.org]; RCVD_COUNT_ONE(0.00)[1]; ASN(0.00)[asn:15169, ipnet:2a00:1450::/32, country:US]; MISSING_XM_UA(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[2a00:1450:4864:20::12e:from] I have my (amd64, -current) box set up to build a lot of ports in parallel with a fairly high `make -j` value as well. This will sometimes try to build llvm versions 15, 16, and 17 and maybe a gcc or two and/or rustc and/or firefox etc and push the load over 100 and run me out of real memory (currently only 64 GB). When this happens, it's not unusual to get: pid (c++) ... exited on signal 4 (core dumped) messages on the console, occasional uprintf() messages, and a build failure -- which goes away when retrying. It's not a parallel make jobs issue. It *appears* to have something to do with the copyout() calls for signal handlers failing, and it invariably coincides with increasing swap usage. I'm swapping to a zfs mirror so presumably there aren't any issues with data corruption here (and I've run memory tests on the box as well). I can't really make heads or tails of the problem so far but it seems to have occurred for other people in the past, with earlier FreeBSD versions, so it suggests some kind of longstanding issue. This could be a total red herring, but while I was staring at the assembly code, I noticed some ifdef SMP "lock" prefixes in {f,s}uword and the cmpxchg instructions, and this prompts me to mention something I discovered the hard way back in the mid-2010s on Haswell processors: the LOCK CMPXCHG16B instruction fails to hold locks if an address splits across a page boundary. (The guy who wrote our memory allocator aligned to a 4 byte boundary instead of an 8 byte boundary and we were using atomic ops on allocated data structures to build "lockless" queues. I spent a couple of weeks tracking down the crash to this particular problem.) So I wonder whether these routines should first check that the addresses are properly aligned, and return EFAULT if not. Once I understand how the memmove macros work I'll think about this more. :-) Chris From nobody Sat Jan 4 14:57:21 2025 X-Original-To: freebsd-hackers@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4YQNsw1rR3z5kMMl for ; Sat, 04 Jan 2025 15:00:36 +0000 (UTC) (envelope-from li-fbsd@citylink.dinoex.sub.org) Received: from uucp.dinoex.org (uucp.dinoex.org [IPv6:2a0b:f840::12]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "uucp.dinoex.sub.de", Issuer "R11" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4YQNst4ZZSz4Zrx for ; Sat, 4 Jan 2025 15:00:34 +0000 (UTC) (envelope-from li-fbsd@citylink.dinoex.sub.org) Authentication-Results: mx1.freebsd.org; dkim=none; spf=pass (mx1.freebsd.org: domain of li-fbsd@citylink.dinoex.sub.org designates 2a0b:f840::12 as permitted sender) smtp.mailfrom=li-fbsd@citylink.dinoex.sub.org; 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logging-data="30144"; mail-complaints-to="usenet@citylink.dinoex.sub.org" User-Agent: slrn/1.0.3 (FreeBSD) To: freebsd-hackers@freebsd.org X-Milter: Spamilter (Reciever: uucp.dinoex.org; Sender-ip: 0:0:2a0b:f840::; Sender-helo: uucp.dinoex.org;) X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (uucp.dinoex.org [IPv6:2a0b:f840:0:0:0:0:0:12]); Sat, 04 Jan 2025 16:00:10 +0100 (CET) X-Rspamd-Queue-Id: 4YQNst4ZZSz4Zrx X-Spamd-Bar: --- X-Spamd-Result: default: False [-4.00 / 15.00]; ARC_ALLOW(-1.00)[uucp.dinoex.org:s=M20221114:i=1]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_SHORT(-1.00)[-1.000]; FORGED_SENDER(0.30)[pmc@citylink.dinoex.sub.org,li-fbsd@citylink.dinoex.sub.org]; R_SPF_ALLOW(-0.20)[+mx]; MIME_GOOD(-0.10)[text/plain]; FROM_HAS_DN(0.00)[]; R_DKIM_NA(0.00)[]; RCPT_COUNT_ONE(0.00)[1]; HAS_XAW(0.00)[]; ASN(0.00)[asn:205376, ipnet:2a0b:f840::/32, country:DE]; FROM_NEQ_ENVFROM(0.00)[pmc@citylink.dinoex.sub.org,li-fbsd@citylink.dinoex.sub.org]; MLMMJ_DEST(0.00)[freebsd-hackers@freebsd.org]; MIME_TRACE(0.00)[0:+]; TO_MATCH_ENVRCPT_ALL(0.00)[]; RCVD_COUNT_THREE(0.00)[4]; PREVIOUSLY_DELIVERED(0.00)[freebsd-hackers@freebsd.org]; DMARC_NA(0.00)[sub.org]; RCVD_TLS_LAST(0.00)[]; TO_DN_NONE(0.00)[] List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@FreeBSD.org On 2025-01-04, Chris Torek wrote: > I have my (amd64, -current) box set up to build a lot of ports in > parallel with a fairly high `make -j` value as well. This will > sometimes try to build llvm versions 15, 16, and 17 and maybe a gcc or > two and/or rustc and/or firefox etc and push the load over 100 and run > me out of real memory (currently only 64 GB). When this happens, it's > not unusual to get: "only"... ? *shrug* Similar config here, 20 core, 80 GB, 4 domains, builds run within temporary bhyves, a couple in parallel. Had a lot fun getting llvm builds to run along w/o mem exhaustion. > pid (c++) ... exited on signal 4 (core dumped) > > messages on the console, occasional uprintf() messages, and a build Haven't seen exactly that one yet. > failure -- which goes away when retrying. It's not a parallel make > jobs issue. It *appears* to have something to do with the copyout() > calls for signal handlers failing, and it invariably coincides with > increasing swap usage. I'm swapping to a zfs mirror Well, You shouldn't do that. Swapping back onto ZFS does usually work for some individual process that needs a lot of memory, for some in-memory array or such - i.e. for desktop uses. I never expected it to work when the entire system runs from paging. In any case, looping back the swap onto ZFS is logically bogus. So, get one or two decent SSD, put the swap onto raw partitions, and test with that, to see if the issue reproduces. Only then I would try and search further for the actual cause. From nobody Sat Jan 4 16:27:06 2025 X-Original-To: freebsd-hackers@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4YQQp047wMz5hyjh for ; Sat, 04 Jan 2025 16:27:20 +0000 (UTC) (envelope-from chris.torek@gmail.com) Received: from mail-lf1-x12f.google.com (mail-lf1-x12f.google.com [IPv6:2a00:1450:4864:20::12f]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "WR4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4YQQp02Qnrz4j8h for ; Sat, 4 Jan 2025 16:27:20 +0000 (UTC) (envelope-from chris.torek@gmail.com) Authentication-Results: mx1.freebsd.org; none Received: by mail-lf1-x12f.google.com with SMTP id 2adb3069b0e04-53e389d8dc7so14037667e87.0 for ; Sat, 04 Jan 2025 08:27:20 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1736008038; x=1736612838; darn=freebsd.org; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=jFwmf9ccIB/1o4yXd2ExtLRiYCXzdqSkqBb5vUdC0bs=; b=RVA3v/6nXT0B6t/oD0peKPLqs0WFGBUrXkBx4kYonCwPETAXq3w0iF1T5CTqzNay0l un68d7smRrBSMLg39Qm01NdGjB9npEihOf9CIpJctvggvS8omO6o30sPOyF/lbqhlNQS eNFVjywLW9IqD9gRPhn4NwXGDSe931X2mUWM0znLsl0uSuUmYBbcO1WIF/rtKXDDqWv5 U0pMk3ob/UtZZmxhx9RlZ0JU6kJY9tCULe6WTV2QoZL+rZn5Y5/toKg1cLGkjdxok7DX xIiSW/Cb06nNMi178ujzJ2/R7FwVZm5CeOrFX6T2C4/h3mHXIA1OmENdRYPNjL6AXHZq b8Cg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1736008038; x=1736612838; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=jFwmf9ccIB/1o4yXd2ExtLRiYCXzdqSkqBb5vUdC0bs=; b=CXHuoIqBZUG9LliYMG3ZfFVScyXycfltauSW/Xd9yvUclBs15wQmkJshOJHN4kI34r 2vwG8eSgGXHnTSNeBZeUNs6rwlKqTzUn2zWlJQo3BhazW8KwzNr0jyzTuz+D1nWcGkNh Vx5/Jq9NX5DOsLnxr70LGM1garnX/40RDwQZLiqN6IkRUHOiRQrQPvqM6fRPW+igPkua hwMRrLgkGhjTwEsfZcQpC2+1n45T5DT0OPRxkeXihO2vdOju9ZiIgaflOYC4MVowLMiw cA2G4wFk6LTXppC4rHlz2gg/8CItCsNJFd26B3qBGFymiCeLh+o3Jcdw75Hm8M4j0oRY fJPA== X-Gm-Message-State: AOJu0YzUEOI2eH9CJ2AQL2J2SmlBbCx7CtTgCYJifqh/7rG64d4kCiWg G9BmuWxmRDZiWojMmAhGje0yRdHcbO4Itp1bVkmz6OJeM2pyKSE49p4+6MGMWJJXV2UuahVhLXz 33TeJupdbKHzYQkVqkGPrZSsNFWZD0w== X-Gm-Gg: ASbGnct9j1atukICFUcGC5+z/JiDLnLmD2/J62Uw3eaW0VX8Kvg5wTUNqtbfUnlv+s1 dHl9SC1/M1IIcvWNXXNoj51ozGuoZC6MmxrhBsXk= X-Google-Smtp-Source: AGHT+IFSWnYoGkrJ9qYxZqOeusrYYi6m48yoYvB400mfV/23ySVxYkov1I2bS8sxQWFFp2UkPdcHI3O4yqFvESVBMKY= X-Received: by 2002:a05:6512:1591:b0:53e:3ac2:9bfa with SMTP id 2adb3069b0e04-54229533ac9mr14170770e87.23.1736008038267; Sat, 04 Jan 2025 08:27:18 -0800 (PST) List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@FreeBSD.org MIME-Version: 1.0 References: In-Reply-To: From: Chris Torek Date: Sat, 4 Jan 2025 08:27:06 -0800 Message-ID: Subject: Re: curious crashes when under memory pressure To: "Peter 'PMc' Much" Cc: freebsd-hackers@freebsd.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspamd-Queue-Id: 4YQQp02Qnrz4j8h X-Spamd-Bar: ---- X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN(0.00)[asn:15169, ipnet:2a00:1450::/32, country:US]; TAGGED_FROM(0.00)[] On Sat, Jan 4, 2025 at 7:01=E2=80=AFAM Peter 'PMc' Much wrote: >> I'm swapping to a zfs mirror > > Well, You shouldn't do that. Why not? Swapping to a *file* on zfs has obvious issues, but swapping to a mirrored swap partition seems like it should be entirely safe. A bit slow (double writes) but I spent $ on RAM rather than M.2 drives on the theory that I can add those later as needed. 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Sat, 04 Jan 2025 09:27:47 -0800 (PST) List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@FreeBSD.org MIME-Version: 1.0 References: In-Reply-To: From: Joe Schaefer Date: Sat, 4 Jan 2025 12:27:36 -0500 Message-ID: Subject: Re: curious crashes when under memory pressure To: Chris Torek Cc: "Peter 'PMc' Much" , freebsd-hackers@freebsd.org Content-Type: multipart/alternative; boundary="000000000000c270bd062ae4b613" X-Rspamd-Queue-Id: 4YQS7m2Y6Pz4nNG X-Spamd-Bar: --- X-Spamd-Result: default: False [-4.00 / 15.00]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-0.999]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20230601]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; FREEMAIL_TO(0.00)[gmail.com]; RCVD_TLS_LAST(0.00)[]; ARC_NA(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:~]; FREEMAIL_ENVFROM(0.00)[gmail.com]; DKIM_TRACE(0.00)[gmail.com:+]; FREEMAIL_FROM(0.00)[gmail.com]; TO_DN_SOME(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; FROM_HAS_DN(0.00)[]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim]; PREVIOUSLY_DELIVERED(0.00)[freebsd-hackers@freebsd.org]; TO_MATCH_ENVRCPT_SOME(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; MISSING_XM_UA(0.00)[]; MID_RHS_MATCH_FROMTLD(0.00)[]; TAGGED_RCPT(0.00)[]; MLMMJ_DEST(0.00)[freebsd-hackers@freebsd.org]; RCVD_COUNT_ONE(0.00)[1]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; RCVD_IN_DNSWL_NONE(0.00)[2607:f8b0:4864:20::b2b:from] --000000000000c270bd062ae4b613 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Intel and AMD cores are now heterogeneous compute engines. The idea that it is useful to beat the crap of every core simultaneously for an extended period of time is a really dumb idea for capacity testing now. On Sat, Jan 4, 2025 at 11:27=E2=80=AFAM Chris Torek = wrote: > On Sat, Jan 4, 2025 at 7:01=E2=80=AFAM Peter 'PMc' Much > wrote: > >> I'm swapping to a zfs mirror > > > > Well, You shouldn't do that. > > Why not? Swapping to a *file* on zfs has obvious issues, but swapping > to a mirrored swap partition seems like it should be entirely safe. A > bit slow (double writes) but I spent $ on RAM rather than M.2 drives > on the theory that I can add those later as needed. > > Chris > > --000000000000c270bd062ae4b613 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Intel and AMD cores are now heterogeneous compute engines= . The idea that it is useful to beat the crap of every core simultaneously = for an extended period of time is a really dumb idea for capacity testing n= ow.

On Sat, Jan 4, 2025 at 11:27=E2=80=AFAM Chris= Torek <chris.torek@gmail.com> wrote:
On Sat, Jan 4, 2025 a= t 7:01=E2=80=AFAM Peter 'PMc' Much
<pmc@ci= tylink.dinoex.sub.org> wrote:
>> I'm swapping to a zfs mirror
>
> Well, You shouldn't do that.

Why not? Swapping to a *file* on zfs has obvious issues, but swapping
to a mirrored swap partition seems like it should be entirely safe. A
bit slow (double writes) but I spent $ on RAM rather than M.2 drives
on the theory that I can add those later as needed.

Chris

--000000000000c270bd062ae4b613-- From nobody Sat Jan 4 17:30:24 2025 X-Original-To: freebsd-hackers@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4YQSC22Vq1z5j40n for ; Sat, 04 Jan 2025 17:30:38 +0000 (UTC) (envelope-from SRS0=Nfm9=T4=quip.cz=000.fbsd@elsa.codelab.cz) Received: from elsa.codelab.cz (elsa.codelab.cz [94.124.105.4]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4YQSC02Frfz4ph0 for ; Sat, 4 Jan 2025 17:30:36 +0000 (UTC) (envelope-from SRS0=Nfm9=T4=quip.cz=000.fbsd@elsa.codelab.cz) Authentication-Results: mx1.freebsd.org; dkim=pass header.d=quip.cz header.s=private header.b=aj4GbCqX; dkim=pass header.d=quip.cz header.s=private header.b=giRN2XKb; spf=none (mx1.freebsd.org: domain of "SRS0=Nfm9=T4=quip.cz=000.fbsd@elsa.codelab.cz" has no SPF policy when checking 94.124.105.4) smtp.mailfrom="SRS0=Nfm9=T4=quip.cz=000.fbsd@elsa.codelab.cz"; dmarc=none Received: from elsa.codelab.cz (localhost [127.0.0.1]) by elsa.codelab.cz (Postfix) with ESMTP id 2CBDAD7884; Sat, 4 Jan 2025 18:30:28 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quip.cz; s=private; t=1736011828; bh=65JI8H1o8PpPxeaQtiRRBm5xQS7Yq8c+Pjc54mAwSxM=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=aj4GbCqX8vPqS1rs0p/tgd4udqRDM4D2O8xcnKr433Nu9LMFsiS4svBZbN8LMxwh5 rM0xU3n+A8P/NBBO8d2J/mjRM8gidvJ+k/jsYi+YuczDhCH+GpTbNyvsqHUD9I6Rhi ZUoFSzwzCnOowynTPwSHxWYs/THuhxV8TE4uvIGQ= Received: from [192.168.145.49] (ip-89-177-27-225.bb.vodafone.cz [89.177.27.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by elsa.codelab.cz (Postfix) with ESMTPSA id 53D0DD788A; Sat, 4 Jan 2025 18:30:25 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quip.cz; s=private; t=1736011825; bh=65JI8H1o8PpPxeaQtiRRBm5xQS7Yq8c+Pjc54mAwSxM=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=giRN2XKbUmCZfVwpvndtuL3Q5mRf6iqa1woeHN16FxtJkI86B7ZfadO6QJouAwpMp JxjLgUT8lIGB97ZfdAxMe/DoYrVDquS3404qajae2Y96eQGH/H7+o3ZCy340WJu0Hi WvcSnEW46T+wQYMnofe2dMvc8aPdpzdhHexX9yL8= Message-ID: <9e71d8eb-74c3-4bcb-89b1-90d4f9746168@quip.cz> Date: Sat, 4 Jan 2025 18:30:24 +0100 List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@FreeBSD.org MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: curious crashes when under memory pressure To: Chris Torek , Peter 'PMc' Much Cc: freebsd-hackers@freebsd.org References: Content-Language: en-US From: Miroslav Lachman <000.fbsd@quip.cz> In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 4YQSC02Frfz4ph0 X-Spamd-Bar: -- X-Spamd-Result: default: False [-2.99 / 15.00]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_SHORT(-1.00)[-1.000]; FORGED_SENDER(0.30)[000.fbsd@quip.cz,SRS0=Nfm9=T4=quip.cz=000.fbsd@elsa.codelab.cz]; R_DKIM_ALLOW(-0.20)[quip.cz:s=private]; MIME_GOOD(-0.10)[text/plain]; XM_UA_NO_VERSION(0.01)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; DMARC_NA(0.00)[quip.cz]; R_SPF_NA(0.00)[no SPF record]; TO_DN_SOME(0.00)[]; ASN(0.00)[asn:42000, ipnet:94.124.104.0/21, country:CZ]; ARC_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; TAGGED_RCPT(0.00)[]; FREEMAIL_TO(0.00)[gmail.com,citylink.dinoex.sub.org]; MID_RHS_MATCH_FROM(0.00)[]; FROM_NEQ_ENVFROM(0.00)[000.fbsd@quip.cz,SRS0=Nfm9=T4=quip.cz=000.fbsd@elsa.codelab.cz]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_LAST(0.00)[]; TO_MATCH_ENVRCPT_SOME(0.00)[]; MLMMJ_DEST(0.00)[freebsd-hackers@freebsd.org]; DKIM_TRACE(0.00)[quip.cz:+] On 04/01/2025 17:27, Chris Torek wrote: > On Sat, Jan 4, 2025 at 7:01 AM Peter 'PMc' Much > wrote: >>> I'm swapping to a zfs mirror >> >> Well, You shouldn't do that. > > Why not? Swapping to a *file* on zfs has obvious issues, but swapping > to a mirrored swap partition seems like it should be entirely safe. A > bit slow (double writes) but I spent $ on RAM rather than M.2 drives > on the theory that I can add those later as needed. Do you have swap on ZFS or not (in the first post you said "swapping to a zfs mirror")? If yes then it can cause the problems in memory pressure because system has no free memory but ZFS needs memory. If you want the swap on a mirror, then use separate partition on 2 disks and add gmirror on top of them. Kind regards Miroslav Lachman From nobody Sat Jan 4 17:36:20 2025 X-Original-To: freebsd-hackers@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4YQSKp1SkNz5j4Z2 for ; Sat, 04 Jan 2025 17:36:30 +0000 (UTC) (envelope-from karl@denninger.net) Received: from colo1.denninger.net (colo1.denninger.net [104.236.120.189]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4YQSKm2yHJz4ql4 for ; Sat, 4 Jan 2025 17:36:28 +0000 (UTC) (envelope-from karl@denninger.net) Authentication-Results: mx1.freebsd.org; dkim=none; spf=pass (mx1.freebsd.org: domain of karl@denninger.net designates 104.236.120.189 as permitted sender) smtp.mailfrom=karl@denninger.net; dmarc=pass (policy=none) header.from=denninger.net Received: from denninger.net (syn-071-015-252-132.res.spectrum.com [71.15.252.132]) by colo1.denninger.net (Postfix) with ESMTP id D62652110DC for ; 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On 1/4/2025 12:30, Miroslav Lachman wrote:
On 04/01/2025 17:27, Chris Torek wrote:
On Sat, Jan 4, 2025 at 7:01=E2=80=AFAM Pe= ter 'PMc' Much
<pmc@citylink.dinoex.sub.org> wrote:
I'm swapping to a zfs mirror

Well, You shouldn't do that.

Why not? Swapping to a *file* on zfs has obvious issues, but swapping
to a mirrored swap partition seems like it should be entirely safe. A
bit slow (double writes) but I spent $ on RAM rather than M.2 drives
on the theory that I can add those later as needed.

Do you have swap on ZFS or not (in the first post you said "swapping to a zfs mirror")? If yes then it can cause the problems in memory pressure because system has no free memory but ZFS needs memory.
If you want the swap on a mirror, then use separate partition on 2 disks and add gmirror on top of them.

Kind regards
Miroslav Lachman

What's the argument for swapping to a mirror in the first place?=C2= =A0 If the issue is throughput IMHO the answer is to swap to multiple devices.

Putting swap through a filesystem abstraction as noted above runs the risk of requiring an allocation of RAM for the operation to complete when you're desperately short on it in the first place resulting in serious trouble.

--
Karl Denninger
karl@denninger.net
The Market Ticker
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Sat, 4 Jan 2025 18:36:08 +0100 (CET) (envelope-from pmc@citylink.dinoex.sub.org) Received: from disp.intra.daemon.contact (disp-e.intra.daemon.contact [IPv6:fd00:0:0:0:0:0:0:112]) by admn.intra.daemon.contact (8.18.1/8.18.1) with ESMTPS id 504HU02m041291 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=OK); Sat, 4 Jan 2025 18:30:01 +0100 (CET) (envelope-from pmc@citylink.dinoex.sub.org) Received: from disp.intra.daemon.contact (localhost [127.0.0.1]) by disp.intra.daemon.contact (8.18.1/8.18.1) with ESMTPS id 504HTVO4073054 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Sat, 4 Jan 2025 18:29:32 +0100 (CET) (envelope-from pmc@citylink.dinoex.sub.org) Received: (from pmc@localhost) by disp.intra.daemon.contact (8.18.1/8.18.1/Submit) id 504HTVxs073053; Sat, 4 Jan 2025 18:29:31 +0100 (CET) (envelope-from pmc@citylink.dinoex.sub.org) X-Authentication-Warning: disp.intra.daemon.contact: pmc set sender to pmc@citylink.dinoex.sub.org using -f Date: Sat, 4 Jan 2025 18:29:31 +0100 From: "Peter 'PMc' Much" To: Chris Torek Cc: freebsd-hackers@freebsd.org Subject: Re: curious crashes when under memory pressure Message-ID: References: List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@FreeBSD.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable In-Reply-To: X-Milter: Spamilter (Reciever: uucp.dinoex.org; Sender-ip: 0:0:2a0b:f840::; Sender-helo: uucp.dinoex.org;) X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (uucp.dinoex.org [IPv6:2a0b:f840:0:0:0:0:0:12]); Sat, 04 Jan 2025 18:36:11 +0100 (CET) X-Rspamd-Queue-Id: 4YQSKn3vrCz4qrC X-Spamd-Bar: ---- X-Spamd-Result: default: False [-4.30 / 15.00]; ARC_ALLOW(-1.00)[uucp.dinoex.org:s=M20221114:i=1]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_SHORT(-1.00)[-1.000]; R_SPF_ALLOW(-0.20)[+mx]; MIME_GOOD(-0.10)[text/plain]; TAGGED_RCPT(0.00)[]; ASN(0.00)[asn:205376, ipnet:2a0b:f840::/32, country:DE]; RCPT_COUNT_TWO(0.00)[2]; MIME_TRACE(0.00)[0:+]; MISSING_XM_UA(0.00)[]; FREEMAIL_TO(0.00)[gmail.com]; R_DKIM_NA(0.00)[]; MLMMJ_DEST(0.00)[freebsd-hackers@freebsd.org]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; RCVD_COUNT_FIVE(0.00)[5]; RCVD_TLS_LAST(0.00)[]; TO_MATCH_ENVRCPT_SOME(0.00)[]; DMARC_NA(0.00)[sub.org]; HAS_XAW(0.00)[] On Sat, Jan 04, 2025 at 08:27:06AM -0800, Chris Torek wrote: ! On Sat, Jan 4, 2025 at 7:01=E2=80=AFAM Peter 'PMc' Much ! wrote: ! >> I'm swapping to a zfs mirror ! > ! > Well, You shouldn't do that. !=20 ! Why not? Swapping to a *file* on zfs has obvious issues, but swapping ! to a mirrored swap partition seems like it should be entirely safe. A A "mirrored swap partition" - that would be a zfs volume inside a zfs pool which runs on some vdevs which happen to be mirrored, right? I don't know of zfs itself having any notion of "partitions". It supports volumes, and these have almost all the same features as filesystems: checksumming, compression, txg buffering, logging, snapshoting, etc. So I tend to doubt such being safe. I can't give You logical proof (it's more than ten years since I looked deeper into the zfs source), but my belly feeling says there is so many creepy things going on in the zfs layer nowadays (and very likely a bunch of undiscovered bugs also), that one should avoid such a stack. Also, the idea of paging into zfs got popular about the same time when it got popular to normally not use swap at all, as lots of memory got available. And while running a system with serious paging (into tens of GB) is practical, it is probably not the usecase where we would page into zfs. A zfs vdev is logically just a fixed-length file - aka a raw partition. Then above that thing is the zfs logic, with lots of caches. There is not only the ARC where data must go thru, there is other dbuf handling, there is more handling on the vdev layer, and all of that needs some memory. (I looked into these various buffers when I patched things so zfs gets a bit more NUMA-friendly - many of them use the UMA allocator scheme, which again has it's own mechanics.) Then above all this memory consuming stuff comes finally the kernel that wants to pageout, and would expect the pageout going directly onto a fixed-length file, aka a raw partition. That doesn't look very sane to me, so what I am saying is: before you spend time hunting this bug, give it a try with direct raw-partition paging. At least then we know if it happens there also, or not - and that helps narrowing the search. ! bit slow (double writes) but I spent $ on RAM rather than M.2 drives ! on the theory that I can add those later as needed. It doesn't need superfast SSD, at least not for testing. Pageout happens async, and while pagein stalls the concerned process, it is read, and read should be faster. cheerio, PMc From nobody Sat Jan 4 17:53:02 2025 X-Original-To: freebsd-hackers@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4YQSsT6h89z5j5rs for ; Sat, 04 Jan 2025 18:00:29 +0000 (UTC) (envelope-from pmc@citylink.dinoex.sub.org) Received: from uucp.dinoex.org (uucp.dinoex.org [IPv6:2a0b:f840::12]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "uucp.dinoex.sub.de", Issuer "R11" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4YQSsT5Fssz4vYk for ; Sat, 4 Jan 2025 18:00:29 +0000 (UTC) (envelope-from pmc@citylink.dinoex.sub.org) Authentication-Results: mx1.freebsd.org; none Received: from uucp.dinoex.org (uucp.dinoex.org [IPv6:2a0b:f840:0:0:0:0:0:12]) by uucp.dinoex.org (8.18.1/8.18.1) with ESMTPS id 504I07VC056857 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Sat, 4 Jan 2025 19:00:08 +0100 (CET) (envelope-from pmc@citylink.dinoex.sub.org) ARC-Seal: i=1; a=rsa-sha256; d=uucp.dinoex.org; s=M20221114; t=1736013610; cv=none; b=gsEl+WgrIcMS6aTK8GcTtqFyVYrQvDQ3altCOTsNW21clGp9iWvGHCWl0+NLx5VSYS5Hg3Mh6o46tkDhbMMpd86bfeIRhrTm6HPQT04I4//TwJ/Hr4TK1G+IH3KmVpaUl+qD//8MZX/b9dm1503hDZiI9XBBJBSqOTtGO/EA3dU= ARC-Message-Signature: i=1; a=rsa-sha256; d=uucp.dinoex.org; s=M20221114; t=1736013610; c=relaxed/simple; bh=EHBEJi+pwi/d4/BXeZ6kg+VkQ07+CR4zjqVzuOBaZCw=; h=Received:Received:Received:Received:X-Authentication-Warning:Date: From:To:Cc:Subject:Message-ID:References:MIME-Version:Content-Type: Content-Disposition:In-Reply-To:X-Milter:X-Greylist; b=g+Sip/xQ7g/2H7hcbCpTvCVwl2icl0LDnGITlC7v5sSrimYm11/XPEtWupecvTdQbEIFlE/R9Mll6jblZ+vgeWe4xingPqPl7hkQ0/kCYeQ+eNCbVANxQbkHw6uRxo1DVciisi0Ujc8q87Sl01bMAGoP6JChbQLxKslozc/UQvc= ARC-Authentication-Results: i=1; uucp.dinoex.org Received: (from uucp@localhost) by uucp.dinoex.org (8.18.1/8.18.1/Submit) with UUCP id 504I07vt056855; Sat, 4 Jan 2025 19:00:07 +0100 (CET) (envelope-from pmc@citylink.dinoex.sub.org) Received: from disp.intra.daemon.contact (disp-e.intra.daemon.contact [IPv6:fd00:0:0:0:0:0:0:112]) by admn.intra.daemon.contact (8.18.1/8.18.1) with ESMTPS id 504Hs0Y5055403 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=OK); Sat, 4 Jan 2025 18:54:01 +0100 (CET) (envelope-from pmc@citylink.dinoex.sub.org) Received: from disp.intra.daemon.contact (localhost [127.0.0.1]) by disp.intra.daemon.contact (8.18.1/8.18.1) with ESMTPS id 504Hr2MZ073172 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Sat, 4 Jan 2025 18:53:02 +0100 (CET) (envelope-from pmc@citylink.dinoex.sub.org) Received: (from pmc@localhost) by disp.intra.daemon.contact (8.18.1/8.18.1/Submit) id 504Hr2OG073171; Sat, 4 Jan 2025 18:53:02 +0100 (CET) (envelope-from pmc@citylink.dinoex.sub.org) X-Authentication-Warning: disp.intra.daemon.contact: pmc set sender to pmc@citylink.dinoex.sub.org using -f Date: Sat, 4 Jan 2025 18:53:02 +0100 From: "Peter 'PMc' Much" To: Joe Schaefer Cc: Chris Torek , freebsd-hackers@freebsd.org Subject: Re: curious crashes when under memory pressure Message-ID: References: List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@FreeBSD.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Milter: Spamilter (Reciever: uucp.dinoex.org; Sender-ip: 0:0:2a0b:f840::; Sender-helo: uucp.dinoex.org;) X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (uucp.dinoex.org [IPv6:2a0b:f840:0:0:0:0:0:12]); Sat, 04 Jan 2025 19:00:10 +0100 (CET) X-Rspamd-Queue-Id: 4YQSsT5Fssz4vYk X-Spamd-Bar: ---- X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; TAGGED_RCPT(0.00)[]; ASN(0.00)[asn:205376, ipnet:2a0b:f840::/32, country:DE] On Sat, Jan 04, 2025 at 12:27:36PM -0500, Joe Schaefer wrote: ! Intel and AMD cores are now heterogeneous compute engines. The idea that it ! is useful to beat the crap of every core simultaneously for an extended ! period of time is a really dumb idea for capacity testing now. Hm. Not sure what exactly You mean. Also not sure /since when/ this would apply, or to /which series/ of these cores. But I would think they are indeed for beating the crap of every core simulatneously, over days. And in my perception the main issue with this is where to move the thermal. But then also, I am using Xeon EP (and rather old ones, for that) - and if these are not designed to do exactly that, then I really don't know... BTW, I am missing the 2025Q1 - they tend to get later and later. And that is an issue here, because rebuilding yields me some 15 kWh thermal in my hall, and I need some planning to cater for these. cheerio, PMc From nobody Sat Jan 4 18:08:33 2025 X-Original-To: freebsd-hackers@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4YQT2q3p5Pz5j6Sl for ; Sat, 04 Jan 2025 18:08:35 +0000 (UTC) (envelope-from leres@freebsd.org) Received: from smtp.freebsd.org (smtp.freebsd.org [96.47.72.83]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "smtp.freebsd.org", Issuer "R10" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4YQT2q3B3Sz3xBS; Sat, 4 Jan 2025 18:08:35 +0000 (UTC) (envelope-from leres@freebsd.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1736014115; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=WEkI9Wxb7xp0QAFL//NdXviyqaW7RTIeBE4Lkiw/NHE=; b=OuYuAR1GWBZkamqlQLEzprRCfq3x2isYWq4XHX9d1kKJfQN0DxnBA2Xh27QiSrZwGu6Cok YQfMkTh+cUIwaZqaUKB9LArDaOC/c9qhGIhgwmRznN+PTuVq27iDk/q9OZRYgmYJMcMDSU 0ZvlSwvXiD+MHP3+KEHBPHGHmRuhUDQxR3yhIRxC2M0cZaBW1JArPdJ44JYUPIFaZ6KuoN Y9G9a4TYBWj8LdD+wEuIZFzJFv89W8Kaw5ps35g/BYL5Rv5ovbavWt2wS9iCij21xjRXLw Ounn+R1NEBj60cAMwRCULmB5nx0bmANSU/utxzyX6jGo5XMkCgy8inRCwss41w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1736014115; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=WEkI9Wxb7xp0QAFL//NdXviyqaW7RTIeBE4Lkiw/NHE=; b=KyWcKm/giCPmKZBf31ZOpkub5aP33M2pOvLpcC4Ev36P0EvKhe/1TnUHBkaO9puhOaCAKG 7YMoqzg1hBlL1dVds0VGRvGwU6h7nuNhZM61s6PLzL3ds+gOAwkPI5/x9WVERJzvnb1HWI RUGx/4827MSFnGX936hJX2hmaprtcmmMbKko5cSP61852gidVCARDKfY0tOm1NvckgVLgo wmLUF3k6tlSb3ePFB3Buahxn8VMB65zwEw/VxvXBozxpwah76gzaHoK0jUdqP52uu58s0H UZH//7gQw3G0pZbQCSKd43tzyvFNa1vDgYoKJl47fZ9ehvtCFUajwT+5Bbf9IA== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1736014115; a=rsa-sha256; cv=none; b=hOeFF+cZhYnx01Bvmulb02WnUSPuAgR159tnPcQqNyV++nRurJob6Mk6nJg6qsxdUXVug+ puWhWfbvuWnWEXcz7eY5vKepHes/YrS6kumo6t7/04KPi+h38JPPzDO7RmSbVej8MnGiBH 3GqrlnoHueVehfUfJha6iLZzrxTKxRg7DWptL8jPNKtvQ52ERs+mUlx6HP0oFyMGJACah0 LxKT/pkNbJkyxsF3iarORymyeT66RXDVSFXtKX60KhrQYPXF+bIYyEHrMckPViNU9ZzuQH Q9/VO7EUARn9e+slP2MfwtM7HFIisulRfEOJdK3UC129UjSpxA6lf2cKCKja7Q== ARC-Authentication-Results: i=1; mx1.freebsd.org; none Received: from [IPV6:fd:1965::2] (unknown [IPv6:2600:1700:ab1b:6800:2e0:edff:fece:8f27]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) (Authenticated sender: leres) by smtp.freebsd.org (Postfix) with ESMTPSA id 4YQT2q0qkGzR9x; Sat, 04 Jan 2025 18:08:35 +0000 (UTC) (envelope-from leres@freebsd.org) Message-ID: <4094b79b-c54a-4953-b693-1b4e8387cf9f@freebsd.org> Date: Sat, 4 Jan 2025 10:08:33 -0800 List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@FreeBSD.org MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: curious crashes when under memory pressure To: Karl Denninger , freebsd-hackers@freebsd.org References: <9e71d8eb-74c3-4bcb-89b1-90d4f9746168@quip.cz> <33db3282-25c4-42fb-8d97-1918d52fa9e2@denninger.net> From: Craig Leres Content-Language: en-US In-Reply-To: <33db3282-25c4-42fb-8d97-1918d52fa9e2@denninger.net> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 1/4/25 09:36, Karl Denninger wrote: > What's the argument for swapping to a mirror in the first place? If the > issue is throughput IMHO the answer is to swap to multiple devices. I thought the idea here is if your swap is not redundant and it goes away the system crashes (or otherwise misbehaves)? I used a beefy poudriere build server (48 cores, 192G, 6 x 480GB nvme) and I build > 1000 packages daily. I see lots of build failures (usually 2-3 a week) but instead of core dumps I see "Killed" in the poudriere logs. Appended is one from today. (Not sure what's up with the symlink failure at the very end...) Craig =>> Building www/mod_wsgi4 build started at Wed Jan 1 01:53:31 PST 2025 port directory: /usr/ports/www/mod_wsgi4 package name: ap24-py311-mod_wsgi-4.9.2 building for: FreeBSD zinc.ee.lbl.gov 14.2-RELEASE FreeBSD 14.2-RELEASE amd64 maintained by: douglas@douglasthrift.net Makefile datestamp: -rw-r--r-- 1 root wheel 1139 Jun 28 2023 /usr/ports/www/mod_wsgi4/Makefile Ports top last git commit: eda5eaff66d Ports top unclean checkout: yes Port dir last git commit: 3d9a815d9c5 Port dir unclean checkout: no Poudriere version: poudriere-git-3.4.2 Host OSVERSION: 1402000 Jail OSVERSION: 1402000 Job Id: 39 [...] ===> License APACHE20 accepted by the user Killed ln: /usr/local/poudriere/data/logs/bulk/14release-current-patched/2025-01-01_00h00m12s/logs/errors/ap24-py311-mod_wsgi-4.9.2.log: File exists build of www/mod_wsgi4@py311 | ap24-py311-mod_wsgi-4.9.2 ended at Wed Jan 1 01:54:28 PST 2025 !!! build failure encountered !!! From nobody Sat Jan 4 18:23:59 2025 X-Original-To: freebsd-hackers@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4YQTPC715Zz5j7WP for ; Sat, 04 Jan 2025 18:24:31 +0000 (UTC) (envelope-from karl@denninger.net) Received: from colo1.denninger.net (colo1.denninger.net [104.236.120.189]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4YQTPC1Lbhz42DY for ; Sat, 4 Jan 2025 18:24:31 +0000 (UTC) (envelope-from karl@denninger.net) Authentication-Results: mx1.freebsd.org; dkim=none; spf=pass (mx1.freebsd.org: domain of karl@denninger.net designates 104.236.120.189 as permitted sender) smtp.mailfrom=karl@denninger.net; dmarc=pass (policy=none) header.from=denninger.net Received: from denninger.net (syn-071-015-252-132.res.spectrum.com [71.15.252.132]) by colo1.denninger.net (Postfix) with ESMTP id 4ABB22110FC for ; Sat, 04 Jan 2025 13:24:02 -0500 (EST) Received: from [192.168.10.23] (D13.Denninger.Net [192.168.10.23]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by denninger.net (Postfix) with ESMTPSA id 0292136E066 for ; Sat, 04 Jan 2025 13:23:59 -0500 (EST) Message-ID: <75390320-6eab-45df-977a-5da00586c7f6@denninger.net> Date: Sat, 4 Jan 2025 13:23:59 -0500 List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@FreeBSD.org MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: curious crashes when under memory pressure To: freebsd-hackers@freebsd.org References: <9e71d8eb-74c3-4bcb-89b1-90d4f9746168@quip.cz> <33db3282-25c4-42fb-8d97-1918d52fa9e2@denninger.net> <4094b79b-c54a-4953-b693-1b4e8387cf9f@freebsd.org> Content-Language: en-US From: Karl Denninger In-Reply-To: <4094b79b-c54a-4953-b693-1b4e8387cf9f@freebsd.org> Content-Type: multipart/signed; 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On 1/4/2025 1:08 PM, Craig Leres wrote= :
On 1/4/25 09:36, Karl Denninger wrote:
What's the argument for swapping to a mirror in the first place? If the issue is throughput IMHO the answer is to swap to multiple devices.

I thought the idea here is if your swap is not redundant and it goes away the system crashes (or otherwise misbehaves)?

Well, yes.

How often do you have storage failures? Oh they happen and are the reason you run mirrors and ZFS and similar for actual data you care about but if I've got a bad volume that is being swapped to I want it out of there and its extremely unlikely to lead to any sort of silent corruption (an actual I/O error probably will lead to a panic.)

Further if I take such a hit on a system that is heavily using swap the performance whack during the resilver is likely to be extreme enough to screw up my workload.=C2=A0 I'd rather shut down = and replace the bad device in that rare but possible instance.

Putting swap through a process that requires memory allocation (e.g. on a ZFS zvol) risks it failing due to the inability of that codepath to allocate memory when it needs it thus killing at least some process (maybe the one that caused the page-out, maybe the victim that was selected to be paged out) which you seem to be experiencing and there is risk (if there's any pathology in there) of a panic or (worse) a deadlock.

IMHO I'd run the swap directly to disk slices adding multiple swap devices if the space requirement for doing so is appropriate (which could be an entire device for each depending on requirements) and if you insist on mirroring it (although I think its likely a mistake to do so) then use something like gmirror as that is much lighter-weight and should not be subject to requiring material RAM allocation when you're already short on it.

--
Karl Denninger
karl@denninger.net
The Market Ticker
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freebsd-hackers@freebsd.org; Sat, 4 Jan 2025 19:45:10 +0100 (CET) (envelope-from li-fbsd@citylink.dinoex.sub.org) Received: from admn.intra.daemon.contact (localhost [127.0.0.1]) by admn.intra.daemon.contact (8.18.1/8.18.1) with ESMTPS id 504Ielcm084938 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO) for ; Sat, 4 Jan 2025 19:40:48 +0100 (CET) (envelope-from li-fbsd@citylink.dinoex.sub.org) Received: from intra.daemon.contact (news@localhost) by admn.intra.daemon.contact (8.18.1/8.18.1/Submit) with NNTP id 504IejnF084766 for freebsd-hackers@freebsd.org; Sat, 4 Jan 2025 19:40:45 +0100 (CET) (envelope-from li-fbsd@citylink.dinoex.sub.org) X-Authentication-Warning: admn.intra.daemon.contact: news set sender to li-fbsd@citylink.dinoex.sub.org using -f From: "Peter 'PMc' Much" X-Newsgroups: m2n.fbsd.hackers Subject: Re: curious crashes when under memory pressure Date: Sat, 4 Jan 2025 18:40:45 -0000 (UTC) Message-ID: References: <9e71d8eb-74c3-4bcb-89b1-90d4f9746168@quip.cz> <33db3282-25c4-42fb-8d97-1918d52fa9e2@denninger.net> <4094b79b-c54a-4953-b693-1b4e8387cf9f@freebsd.org> Injection-Date: Sat, 4 Jan 2025 18:40:45 -0000 (UTC) Injection-Info: admn.intra.daemon.contact; logging-data="60808"; mail-complaints-to="usenet@citylink.dinoex.sub.org" User-Agent: slrn/1.0.3 (FreeBSD) To: freebsd-hackers@freebsd.org X-Milter: Spamilter (Reciever: uucp.dinoex.org; Sender-ip: 0:0:2a0b:f840::; Sender-helo: uucp.dinoex.org;) X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (uucp.dinoex.org [IPv6:2a0b:f840:0:0:0:0:0:12]); Sat, 04 Jan 2025 19:45:13 +0100 (CET) X-Rspamd-Queue-Id: 4YQTsR16HHz44Sr X-Spamd-Bar: --- X-Spamd-Result: default: False [-3.99 / 15.00]; ARC_ALLOW(-1.00)[uucp.dinoex.org:s=M20221114:i=1]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-0.99)[-0.990]; FORGED_SENDER(0.30)[pmc@citylink.dinoex.sub.org,li-fbsd@citylink.dinoex.sub.org]; R_SPF_ALLOW(-0.20)[+mx]; MIME_GOOD(-0.10)[text/plain]; FROM_HAS_DN(0.00)[]; R_DKIM_NA(0.00)[]; RCPT_COUNT_ONE(0.00)[1]; HAS_XAW(0.00)[]; ASN(0.00)[asn:205376, ipnet:2a0b:f840::/32, country:DE]; FROM_NEQ_ENVFROM(0.00)[pmc@citylink.dinoex.sub.org,li-fbsd@citylink.dinoex.sub.org]; MLMMJ_DEST(0.00)[freebsd-hackers@freebsd.org]; MIME_TRACE(0.00)[0:+]; TO_MATCH_ENVRCPT_ALL(0.00)[]; RCVD_COUNT_THREE(0.00)[4]; PREVIOUSLY_DELIVERED(0.00)[freebsd-hackers@freebsd.org]; DMARC_NA(0.00)[sub.org]; RCVD_TLS_LAST(0.00)[]; TO_DN_NONE(0.00)[] List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@FreeBSD.org On 2025-01-04, Craig Leres wrote: > On 1/4/25 09:36, Karl Denninger wrote: >> What's the argument for swapping to a mirror in the first place? If the >> issue is throughput IMHO the answer is to swap to multiple devices. > > I thought the idea here is if your swap is not redundant and it goes > away the system crashes (or otherwise misbehaves)? > > I used a beefy poudriere build server (48 cores, 192G, 6 x 480GB nvme) > and I build > 1000 packages daily. I see lots of build failures (usually > 2-3 a week) but instead of core dumps I see "Killed" in the poudriere > logs. Appended is one from today. (Not sure what's up with the symlink > failure at the very end...) There might be a corresponding message in the system log for the "Killed", that would at least tell us the signal, maybe more. I am doing this on my temporary building bhyves: echo "vm.panic_on_oom=1" >> $tempdir/etc/sysctl.conf echo "vm.pageout_oom_seq=5120" >> $tempdir/etc/sysctl.conf echo "vm.oom_pf_secs=180" >> $tempdir/etc/sysctl.conf echo "vm.pfault_oom_attempts=-1" >> $tempdir/etc/sysctl.conf https://gitr.daemon.contact/sysup/tree/subr_virt.sh#n148 From nobody Sat Jan 4 18:47:16 2025 X-Original-To: freebsd-hackers@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4YQTvW4pKYz5j8rP for ; Sat, 04 Jan 2025 18:47:19 +0000 (UTC) (envelope-from SRS0=Nfm9=T4=quip.cz=000.fbsd@elsa.codelab.cz) Received: from elsa.codelab.cz (elsa.codelab.cz [94.124.105.4]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4YQTvW2Kr1z45B4 for ; Sat, 4 Jan 2025 18:47:19 +0000 (UTC) (envelope-from SRS0=Nfm9=T4=quip.cz=000.fbsd@elsa.codelab.cz) Authentication-Results: mx1.freebsd.org; none Received: from elsa.codelab.cz (localhost [127.0.0.1]) by elsa.codelab.cz (Postfix) with ESMTP id 905A0D7889; Sat, 4 Jan 2025 19:47:17 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quip.cz; s=private; t=1736016437; bh=tBlKlSArzVtChaA+bHumvr8D3Z1PAqC7j0lInHhEYiA=; h=Date:Subject:To:References:From:In-Reply-To; b=dS40MKUWrlKUtiEVVopdxmsTo74CrMLpoF2UQ22SDxodOzSfncNp4oA2BuIJNTAcg sutiaVYkdIhBjFX+/RyD1Thf+EMnd5JxnAH4hJFIL0jG0cRvK24WVSq7Mzu1f7aPzX UPbCR0giG6eOs01MdeETFTbBXAlz8gErDkr2mi/o= Received: from [192.168.145.49] (ip-89-177-27-225.bb.vodafone.cz [89.177.27.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by elsa.codelab.cz (Postfix) with ESMTPSA id B1F91D7884; Sat, 4 Jan 2025 19:47:16 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quip.cz; s=private; t=1736016436; bh=tBlKlSArzVtChaA+bHumvr8D3Z1PAqC7j0lInHhEYiA=; h=Date:Subject:To:References:From:In-Reply-To; b=h5Bf6znlOvqPKdV3juNl8fM4Bfh9/0N/3nlj3XXJ6F7auQGZCJCbTsMIBIHXOI783 CbXP1Ps5Y2y2oruTS06rodBwlN6W8lTDyGRT932Y89GsC52RhPKgb3wzF6rf+w6pBc HD7EIG0TFDkc14ojaIb7UcyXDPFF8Bn21FhYeyNM= Message-ID: <7276b34f-bba9-41a7-afd9-8505c83f8e08@quip.cz> Date: Sat, 4 Jan 2025 19:47:16 +0100 List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@FreeBSD.org MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: curious crashes when under memory pressure To: Karl Denninger , freebsd-hackers@freebsd.org References: <9e71d8eb-74c3-4bcb-89b1-90d4f9746168@quip.cz> <33db3282-25c4-42fb-8d97-1918d52fa9e2@denninger.net> Content-Language: en-US From: Miroslav Lachman <000.fbsd@quip.cz> In-Reply-To: <33db3282-25c4-42fb-8d97-1918d52fa9e2@denninger.net> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 4YQTvW2Kr1z45B4 X-Spamd-Bar: ---- X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN(0.00)[asn:42000, ipnet:94.124.104.0/21, country:CZ] On 04/01/2025 18:36, Karl Denninger wrote: > > On 1/4/2025 12:30, Miroslav Lachman wrote: >> On 04/01/2025 17:27, Chris Torek wrote: >>> On Sat, Jan 4, 2025 at 7:01 AM Peter 'PMc' Much [..] >> Do you have swap on ZFS or not (in the first post you said "swapping >> to a zfs mirror")? If yes then it can cause the problems in memory >> pressure because system has no free memory but ZFS needs memory. >> If you want the swap on a mirror, then use separate partition on 2 >> disks and add gmirror on top of them. >> >> Kind regards >> Miroslav Lachman >> > What's the argument for swapping to a mirror in the first place? If the > issue is throughput IMHO the answer is to swap to multiple devices. Redundancy in case of disk failure. I've seen many disk failures over the years, and when you have a swap concatenated from partitions on 2 disks, the whole system mirrored on 2 disks, and 1 disk fails, the system crashes. That's why we've always used swap over gmirrored partitions. Then we can pull out one disk when system is running and replace it with a new disk. > Putting swap through a filesystem abstraction as noted above runs the > risk of requiring an allocation of RAM for the operation to complete > when you're desperately short on it in the first place resulting in > serious trouble. Kind regards Miroslav Lachman From nobody Sat Jan 4 19:53:49 2025 X-Original-To: freebsd-hackers@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4YQWNW02MJz5jjrN; Sat, 04 Jan 2025 19:54:03 +0000 (UTC) (envelope-from ghandatmanas@gmail.com) Received: from mail-ot1-x32c.google.com (mail-ot1-x32c.google.com [IPv6:2607:f8b0:4864:20::32c]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "WR4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4YQWNV0GMfz4Clf; Sat, 4 Jan 2025 19:54:02 +0000 (UTC) (envelope-from ghandatmanas@gmail.com) Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20230601 header.b=QykfbUdY; spf=pass (mx1.freebsd.org: domain of ghandatmanas@gmail.com designates 2607:f8b0:4864:20::32c as permitted sender) smtp.mailfrom=ghandatmanas@gmail.com; dmarc=pass (policy=none) header.from=gmail.com Received: by mail-ot1-x32c.google.com with SMTP id 46e09a7af769-71e22b2387cso9044314a34.3; Sat, 04 Jan 2025 11:54:01 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1736020440; x=1736625240; darn=freebsd.org; h=to:subject:message-id:date:from:mime-version:from:to:cc:subject :date:message-id:reply-to; bh=TpqWzIKfFruBwbZCeiwdXXLO7rJpRAbmSl0Vm56bWAs=; b=QykfbUdYHnN2/cANlod8j201l8MIE9JhTf3vm+SGR+PcIekT+5qapwZ+XWg/u6osJf okteBkAcnGM+tGLGq3YtNo7OM6YFujuzOM5CHZS9vZNkoPhHmspIVBwVQPnqGLJFFbaZ IP+huawntOd2uMHr+RAc/rpW5M5HWEPOngY0g60A1BzEyy9+picJiHZixQwmXyQiTdh3 0Z+F9wkyDsu+xUn8VH5CUEPlr801uW8JzAdTh4rNMHpE/etBNs4rLdYgA+MLUuOwLd11 NV3fQ7/lVMD9yH0FJix5vnGM3RCbSKQfLRhX+yhAoinWeHLCP7M/E/K9NYfC9nVwPZt5 GFjw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1736020440; x=1736625240; h=to:subject:message-id:date:from:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=TpqWzIKfFruBwbZCeiwdXXLO7rJpRAbmSl0Vm56bWAs=; b=IZ7pdyhVGG9PQeHfzhpKGPDhFEMQeUYuYRD1UR0LHo7KagX8zI8jvH/kV9SmCQnn18 R0mfCO/SrywGZNcESvt3PpPGBWjixMyEVr/SqWR2ynIslipq61cuAa28lE+DTs2a9v0I wEN5phJRYldCcpVuVEfeHab7rwsKQPU/SP00iysiSVWQBj59pOwhyTuWyVmIiEDKLQmw NfBzqab1AgHA/g6YwZGKDQCE4IDR4c0hUiJbFtcJC4b6B1kKZCyBCcoXiDvMagDbi98i PZxOE16Iq2GRK9gXi4sKVA9t4u75JnrKGJbKbi87/XFNXzhCzzy/swLDgvyr+HC6Spen 5jJg== X-Forwarded-Encrypted: i=1; AJvYcCXaT3KtzDhMEWh7gtUqcelWHgL8yAMnDfxfqhjmfjEQCut/3kUfqNsH+/cTpYFmxdITGM7gMzNg@freebsd.org X-Gm-Message-State: AOJu0YwoCBFym6zcZUjtpAhXYYqxqKrT+nWAZA6C/sze5aWgTQXF344O ceVV1MrI4p+CT94hvdlSGG0DHnAUDSeEn8JwKK7Z2Zh/hzLxz7xjSyYM6gYknm+FPdv34GAbq1f JWjbYZlIfk0HnCuN88FcWlyneZmzZ4sDx X-Gm-Gg: ASbGncvSj0US88v1NT+wuPitFkznbNjAEy8ljAVttxmvaMcW5cnvNGvzQ9pIEafoLHl mumM1n8htTddl7AahnjL0kENSpmyeG/SwrjkuloI= X-Google-Smtp-Source: AGHT+IG3Mj7YxIty3BeDM/f8Z/Y1XdL45WemP5I0TxNY7URDco9aJAP8mTSVigyxogOm8vML1GXKJETePcD9YxXa5HU= X-Received: by 2002:a05:6830:2586:b0:71d:ed5f:f181 with SMTP id 46e09a7af769-720ff8b5f31mr29992427a34.22.1736020440657; Sat, 04 Jan 2025 11:54:00 -0800 (PST) List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@FreeBSD.org MIME-Version: 1.0 From: Manas Ghandat Date: Sun, 5 Jan 2025 01:23:49 +0530 Message-ID: Subject: GSoC project Ideas To: freebsd-hackers@freebsd.org, hackers@freebsd.org Content-Type: multipart/alternative; boundary="000000000000b03949062ae6c1d1" X-Rspamd-Queue-Id: 4YQWNV0GMfz4Clf X-Spamd-Bar: --- X-Spamd-Result: default: False [-3.93 / 15.00]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-0.999]; NEURAL_HAM_SHORT(-0.93)[-0.929]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20230601]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; MIME_TRACE(0.00)[0:+,1:+,2:~]; RCVD_COUNT_ONE(0.00)[1]; MISSING_XM_UA(0.00)[]; FREEMAIL_FROM(0.00)[gmail.com]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim]; ARC_NA(0.00)[]; TO_DN_NONE(0.00)[]; FROM_HAS_DN(0.00)[]; RCVD_TLS_LAST(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; MID_RHS_MATCH_FROMTLD(0.00)[]; RCPT_COUNT_TWO(0.00)[2]; MLMMJ_DEST(0.00)[freebsd-hackers@freebsd.org,hackers@freebsd.org]; RCVD_IN_DNSWL_NONE(0.00)[2607:f8b0:4864:20::32c:from]; DKIM_TRACE(0.00)[gmail.com:+] --000000000000b03949062ae6c1d1 Content-Type: text/plain; charset="UTF-8" Hi, I am Manas and I am interested in working on the syzkaller project ideas mentioned at https://wiki.freebsd.org/SummerOfCodeIdeas#syzkaller_improvements There has been a GSoC project in 2021 regarding the same. I wanted to know if this idea is implemented or if some parts are yet to be implemented Thanks, Manas --000000000000b03949062ae6c1d1 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi,

I am Mana= s and I am interested in working on the syzkaller project ideas mentioned a= t=C2=A0https://wiki.freebsd.org/SummerOfCodeIdeas#syzk= aller_improvements

T= here has been a GSoC project in 2021 regarding the same. I wanted to know i= f this idea is implemented or if some parts are yet to be implemented=C2=A0=

Thanks,
Manas
--000000000000b03949062ae6c1d1-- From nobody Sat Jan 4 19:53:49 2025 X-Original-To: hackers@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4YQWNW02MJz5jjrN; Sat, 04 Jan 2025 19:54:03 +0000 (UTC) (envelope-from ghandatmanas@gmail.com) Received: from mail-ot1-x32c.google.com (mail-ot1-x32c.google.com [IPv6:2607:f8b0:4864:20::32c]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "WR4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4YQWNV0GMfz4Clf; Sat, 4 Jan 2025 19:54:02 +0000 (UTC) (envelope-from ghandatmanas@gmail.com) Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20230601 header.b=QykfbUdY; spf=pass (mx1.freebsd.org: domain of ghandatmanas@gmail.com designates 2607:f8b0:4864:20::32c as permitted sender) smtp.mailfrom=ghandatmanas@gmail.com; dmarc=pass (policy=none) header.from=gmail.com Received: by mail-ot1-x32c.google.com with SMTP id 46e09a7af769-71e22b2387cso9044314a34.3; Sat, 04 Jan 2025 11:54:01 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1736020440; x=1736625240; darn=freebsd.org; h=to:subject:message-id:date:from:mime-version:from:to:cc:subject :date:message-id:reply-to; bh=TpqWzIKfFruBwbZCeiwdXXLO7rJpRAbmSl0Vm56bWAs=; b=QykfbUdYHnN2/cANlod8j201l8MIE9JhTf3vm+SGR+PcIekT+5qapwZ+XWg/u6osJf okteBkAcnGM+tGLGq3YtNo7OM6YFujuzOM5CHZS9vZNkoPhHmspIVBwVQPnqGLJFFbaZ IP+huawntOd2uMHr+RAc/rpW5M5HWEPOngY0g60A1BzEyy9+picJiHZixQwmXyQiTdh3 0Z+F9wkyDsu+xUn8VH5CUEPlr801uW8JzAdTh4rNMHpE/etBNs4rLdYgA+MLUuOwLd11 NV3fQ7/lVMD9yH0FJix5vnGM3RCbSKQfLRhX+yhAoinWeHLCP7M/E/K9NYfC9nVwPZt5 GFjw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1736020440; x=1736625240; h=to:subject:message-id:date:from:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=TpqWzIKfFruBwbZCeiwdXXLO7rJpRAbmSl0Vm56bWAs=; b=IZ7pdyhVGG9PQeHfzhpKGPDhFEMQeUYuYRD1UR0LHo7KagX8zI8jvH/kV9SmCQnn18 R0mfCO/SrywGZNcESvt3PpPGBWjixMyEVr/SqWR2ynIslipq61cuAa28lE+DTs2a9v0I wEN5phJRYldCcpVuVEfeHab7rwsKQPU/SP00iysiSVWQBj59pOwhyTuWyVmIiEDKLQmw NfBzqab1AgHA/g6YwZGKDQCE4IDR4c0hUiJbFtcJC4b6B1kKZCyBCcoXiDvMagDbi98i PZxOE16Iq2GRK9gXi4sKVA9t4u75JnrKGJbKbi87/XFNXzhCzzy/swLDgvyr+HC6Spen 5jJg== X-Forwarded-Encrypted: i=1; AJvYcCXaT3KtzDhMEWh7gtUqcelWHgL8yAMnDfxfqhjmfjEQCut/3kUfqNsH+/cTpYFmxdITGM7gMzNg@freebsd.org X-Gm-Message-State: AOJu0YwoCBFym6zcZUjtpAhXYYqxqKrT+nWAZA6C/sze5aWgTQXF344O ceVV1MrI4p+CT94hvdlSGG0DHnAUDSeEn8JwKK7Z2Zh/hzLxz7xjSyYM6gYknm+FPdv34GAbq1f JWjbYZlIfk0HnCuN88FcWlyneZmzZ4sDx X-Gm-Gg: ASbGncvSj0US88v1NT+wuPitFkznbNjAEy8ljAVttxmvaMcW5cnvNGvzQ9pIEafoLHl mumM1n8htTddl7AahnjL0kENSpmyeG/SwrjkuloI= X-Google-Smtp-Source: AGHT+IG3Mj7YxIty3BeDM/f8Z/Y1XdL45WemP5I0TxNY7URDco9aJAP8mTSVigyxogOm8vML1GXKJETePcD9YxXa5HU= X-Received: by 2002:a05:6830:2586:b0:71d:ed5f:f181 with SMTP id 46e09a7af769-720ff8b5f31mr29992427a34.22.1736020440657; Sat, 04 Jan 2025 11:54:00 -0800 (PST) List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@FreeBSD.org MIME-Version: 1.0 From: Manas Ghandat Date: Sun, 5 Jan 2025 01:23:49 +0530 Message-ID: Subject: GSoC project Ideas To: freebsd-hackers@freebsd.org, hackers@freebsd.org Content-Type: multipart/alternative; boundary="000000000000b03949062ae6c1d1" X-Rspamd-Queue-Id: 4YQWNV0GMfz4Clf X-Spamd-Bar: --- X-Spamd-Result: default: False [-3.93 / 15.00]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-0.999]; NEURAL_HAM_SHORT(-0.93)[-0.929]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20230601]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; MIME_TRACE(0.00)[0:+,1:+,2:~]; RCVD_COUNT_ONE(0.00)[1]; MISSING_XM_UA(0.00)[]; FREEMAIL_FROM(0.00)[gmail.com]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim]; ARC_NA(0.00)[]; TO_DN_NONE(0.00)[]; FROM_HAS_DN(0.00)[]; RCVD_TLS_LAST(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; MID_RHS_MATCH_FROMTLD(0.00)[]; RCPT_COUNT_TWO(0.00)[2]; MLMMJ_DEST(0.00)[freebsd-hackers@freebsd.org,hackers@freebsd.org]; RCVD_IN_DNSWL_NONE(0.00)[2607:f8b0:4864:20::32c:from]; DKIM_TRACE(0.00)[gmail.com:+] --000000000000b03949062ae6c1d1 Content-Type: text/plain; charset="UTF-8" Hi, I am Manas and I am interested in working on the syzkaller project ideas mentioned at https://wiki.freebsd.org/SummerOfCodeIdeas#syzkaller_improvements There has been a GSoC project in 2021 regarding the same. I wanted to know if this idea is implemented or if some parts are yet to be implemented Thanks, Manas --000000000000b03949062ae6c1d1 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi,

I am Mana= s and I am interested in working on the syzkaller project ideas mentioned a= t=C2=A0https://wiki.freebsd.org/SummerOfCodeIdeas#syzk= aller_improvements

T= here has been a GSoC project in 2021 regarding the same. I wanted to know i= f this idea is implemented or if some parts are yet to be implemented=C2=A0=

Thanks,
Manas
--000000000000b03949062ae6c1d1-- From nobody Sat Jan 4 21:11:05 2025 X-Original-To: freebsd-hackers@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4YQY5Q5DRsz5jp12 for ; Sat, 04 Jan 2025 21:11:06 +0000 (UTC) (envelope-from leres@freebsd.org) Received: from smtp.freebsd.org (smtp.freebsd.org [IPv6:2610:1c1:1:606c::24b:4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "smtp.freebsd.org", Issuer "R10" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4YQY5Q4b9cz4Lvs; Sat, 4 Jan 2025 21:11:06 +0000 (UTC) (envelope-from leres@freebsd.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1736025066; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=MSVHD5wSIGfQ7dlknxImq862XeNLOgDv5VkrdoplYGQ=; b=j2n4y71BILAqNkDrZHLnjX9T+dqvKXyl9oyhOIs2O/ENwSbpfUPjyuNKt6/hbF+DxAXmUo JsUUB5HUvFhktOGrv/09Veh1xbc13WV8rKhBbi945A5TF6ppKxFfHHmIcvg/jx4Pk7KZWQ 6oDRCHWoqZKrmvrFgwfDKKcg1d9ZYBUKTt1lL3od3rcZyJI2d4HWGodOa9G5huH2tSUFHG DRmuavaTgxwbfehlRj8oLguT4q+9zPM/tndIx+IeuFEa84ZTTyx4OmdpHZV8L7j0LpuZVs XoZ8qHUPKteJ7vG3762qzDhUe8X/nzM2nvH2V+HIfplUSb1rXlw/CsDBOm9Q/g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1736025066; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=MSVHD5wSIGfQ7dlknxImq862XeNLOgDv5VkrdoplYGQ=; b=it6kxgqnFH+FDnKXr3M0rGseTf+gYC5uDAXXeLb/BcRmek8CyHmOy79beRwGnmVV5ObZo5 UbkyyWdcQ4DlEOMUQYG4TebRilKaUg8nZc3jtYPLj2vbBmsHcnDrWmjsyEs89V/ZNqa9Ze BXOXoCEuFfCydMM+4OX6s8fPyFyDz0ZpeHRWWuoviNv4xTq8KIMF4RB2QaArr1fO7rzX1q xH3SBE/h7Jfq0/WsigNBxNyG2cqGcTW3UEFrEklFO4rkJvxxP93HLkZVfp+vuxg2tsaXHp 3dx2ecThUA7+gpCg97tA2mNkADSOhRvMCiJHHaZIiKxZgayRGJ/IqppBw0XBdQ== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1736025066; a=rsa-sha256; cv=none; b=VzCMiyT1ppp+YMwxCoM88aE6TXJJyugl7NUglah1x9eYWNT1ZOL1CRDVQG8p0tVmeDp4Bx MCh9njHhuk+dEMCp7Wb1D+3N2tVuxN4QK3j2BT093ewsWT5LlK02RxuANauEGW7r0kSWOS JASwedCcbNCyolH9y4C8C10ucsSr1sGYdSXAJfdmKwUQt56vJOrna1shm14/RbeKumkgHr Kl17PUgSOdio0auGsqV4M9OJvxb8p9c8cBWiNakm3p1+5I4YMX9hlD3Vw0WqnCioQaRO0j lgE5Il2dov6iyr8AJ70n4n6JJ6ep4vGtL4NZJdT25sOWfd+fEjvzDi7CnswCdA== ARC-Authentication-Results: i=1; mx1.freebsd.org; none Received: from [IPV6:fd:1965::2] (unknown [IPv6:2600:1700:ab1b:6800:2e0:edff:fece:8f27]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) (Authenticated sender: leres) by smtp.freebsd.org (Postfix) with ESMTPSA id 4YQY5Q2CKZzmG8; Sat, 04 Jan 2025 21:11:06 +0000 (UTC) (envelope-from leres@freebsd.org) Message-ID: <87928610-fcad-400e-b7b3-076c6d3f1200@freebsd.org> Date: Sat, 4 Jan 2025 13:11:05 -0800 List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@FreeBSD.org MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: curious crashes when under memory pressure To: Peter 'PMc' Much , freebsd-hackers@freebsd.org References: <9e71d8eb-74c3-4bcb-89b1-90d4f9746168@quip.cz> <33db3282-25c4-42fb-8d97-1918d52fa9e2@denninger.net> <4094b79b-c54a-4953-b693-1b4e8387cf9f@freebsd.org> From: Craig Leres Content-Language: en-US In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 1/4/25 10:40, Peter 'PMc' Much wrote: > There might be a corresponding message in the system log for the > "Killed", that would at least tell us the signal, maybe more. I wish. One minute before I see: Jan 4 01:52:10 zinc.ee.lbl.gov kernel: : pid 21007 (conftest), jid 3845, uid 0: exited on signal 11 (core dumped) but I see a lot of those and I believe they're normal and autoconf related. On 1/4/25 10:47, Miroslav Lachman wrote: > Redundancy in case of disk failure. I've seen many disk failures over > the years, and when you have a swap concatenated from partitions on 2 > disks, the whole system mirrored on 2 disks, and 1 disk fails, the > system crashes. That's why we've always used swap over gmirrored > partitions. Then we can pull out one disk when system is running and > replace it with a new disk. This. And in my case the system is located in a data center that I do not have casual access to so I'm happy to make the tradeoff in favor of system resilience. Craig From nobody Sat Jan 4 21:49:26 2025 X-Original-To: freebsd-hackers@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4YQYyJ5Gcfz5jrjq for ; Sat, 04 Jan 2025 21:50:00 +0000 (UTC) (envelope-from karl@denninger.net) Received: from colo1.denninger.net (colo1.denninger.net [104.236.120.189]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4YQYyH5Q8cz4Q93 for ; Sat, 4 Jan 2025 21:49:59 +0000 (UTC) (envelope-from karl@denninger.net) Authentication-Results: mx1.freebsd.org; dkim=none; spf=pass (mx1.freebsd.org: domain of karl@denninger.net designates 104.236.120.189 as permitted sender) smtp.mailfrom=karl@denninger.net; dmarc=pass (policy=none) header.from=denninger.net Received: from denninger.net (syn-071-015-252-132.res.spectrum.com [71.15.252.132]) by colo1.denninger.net (Postfix) with ESMTP id AA59C2110DC for ; 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On 1/4/2025 16:11, Craig Leres wrote:<= br>
On 1/4/25 10:40, Peter 'PMc' Much wrote:
There might be a corresponding message in= the system log for the
"Killed", that would at least tell us the signal, maybe more.

I wish. One minute before I see:

=C2=A0=C2=A0=C2=A0 Jan=C2=A0 4 01:52:10 zinc.ee.lbl.gov kernel: : p= id 21007 (conftest), jid 3845, uid 0: exited on signal 11 (core dumped)

but I see a lot of those and I believe they're normal and autoconf related.

On 1/4/25 10:47, Miroslav Lachman wrote:
> Redundancy in case of disk failure. I've seen many disk failures over
> the years, and when you have a swap concatenated from partitions on 2
> disks, the whole system mirrored on 2 disks, and 1 disk fails, the
> system crashes. That's why we've always used swap over gmirrored
> partitions. Then we can pull out one disk when system is running and
> replace it with a new disk.

This. And in my case the system is located in a data center that I do not have casual access to so I'm happy to make the tradeoff in favor of system resilience.

=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Craig

That's a reasonable justification for mirroring the swap (despite the fact that you are then doing two I/Os on a write to it instead of one, albeit on different devices) but then I'd still get it out of ZFS' domain and run the swap to a bare GPT partition under gmirror instead simply because ZFS can demand a RAM allocation to do things and swap space is by definition something used under significant memory pressure which implies you can need it within ZFS and not be able to get it.

--
Karl Denninger
karl@denninger.net
The Market Ticker
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mx1.freebsd.org; none Received: from [IPV6:fd:1965::2] (unknown [IPv6:2600:1700:ab1b:6800:2e0:edff:fece:8f27]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) (Authenticated sender: leres) by smtp.freebsd.org (Postfix) with ESMTPSA id 4YQZGL0LsMznkS; Sat, 04 Jan 2025 22:03:53 +0000 (UTC) (envelope-from leres@freebsd.org) Message-ID: <04794cad-eda5-4ab8-ae29-4cc4d53ac033@freebsd.org> Date: Sat, 4 Jan 2025 14:03:53 -0800 List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@FreeBSD.org MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: curious crashes when under memory pressure To: Karl Denninger , freebsd-hackers@freebsd.org References: <9e71d8eb-74c3-4bcb-89b1-90d4f9746168@quip.cz> <33db3282-25c4-42fb-8d97-1918d52fa9e2@denninger.net> <4094b79b-c54a-4953-b693-1b4e8387cf9f@freebsd.org> <87928610-fcad-400e-b7b3-076c6d3f1200@freebsd.org> <12dcc55d-67ae-467b-9249-3d60047d05f0@denninger.net> From: Craig Leres Content-Language: en-US In-Reply-To: <12dcc55d-67ae-467b-9249-3d60047d05f0@denninger.net> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 1/4/25 13:49, Karl Denninger wrote: > That's a reasonable justification for mirroring the swap (despite the > fact that you are then doing two I/Os on a write to it instead of one, > albeit on different devices) but then I'd still get it out of ZFS' > domain and run the swap to a bare GPT partition under gmirror instead > simply because ZFS can demand a RAM allocation to do things and swap > space is by definition something used under significant memory pressure > which implies you can need it within ZFS and not be able to get it. Chris said he was "swapping to a zfs mirror" but I'm swapping to a gmirror. Craig From nobody Sun Jan 5 05:33:04 2025 X-Original-To: freebsd-hackers@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4YQmDv4ffdz5kN6L for ; Sun, 05 Jan 2025 05:33:19 +0000 (UTC) (envelope-from chris.torek@gmail.com) Received: from mail-lj1-x231.google.com (mail-lj1-x231.google.com [IPv6:2a00:1450:4864:20::231]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "WR4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4YQmDv2YyCz449c; Sun, 5 Jan 2025 05:33:19 +0000 (UTC) (envelope-from chris.torek@gmail.com) Authentication-Results: mx1.freebsd.org; none Received: by mail-lj1-x231.google.com with SMTP id 38308e7fff4ca-3011c7b39c7so158976461fa.1; Sat, 04 Jan 2025 21:33:19 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1736055196; x=1736659996; darn=freebsd.org; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=wGP5Pm+vpQxpH+RQ5CrMkv5pcpM3rwDApcJTMVHxRAw=; b=lQG9/4ZSRztX2VTzPwprmooOEHR5sbIVc/nSYw69mFl48YJY9+EPz7H1y9Wnd69KIl pucxSjK8lnkwjJTrzIdbnhQCEF2Dm35A+7cDpd9bbDGef025rfSDOiA+Rppnj9zpOjPb caysABObNCjEKuP/9dWg3HlVhmzJjKb4hOJgS85ztxliQ89vdxM8/9gGLLeoLO+boHB/ dxhzlKjs84+BFQ50LGclTLIZQwaACp4mymMbsJ/dMvOIR1qKbvBuOS6ZlX4NPQvBqCuO EsBOBIkJ9SjS7e1qZ1FTlRFfc8erTrR9hGOVM37fCU9XpiXY500lSw/atWHNzzx7umrk M3dg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1736055196; x=1736659996; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=wGP5Pm+vpQxpH+RQ5CrMkv5pcpM3rwDApcJTMVHxRAw=; b=oMu9t3UaYlrCv4G5aoufthsSlc1JeDU5yCeJRCB55Ab48t7j19nut/tpISRShc51VH gdLWmWeKvWy3qWiaoCQcimM6qxcAFJ2CpCL11IIEf8FBwbU9SFTymI4OWvjSkpr5jkNN iEK7OL+OD4cXiaIAY6DfXMwX0kAwUwNKW6f0ES8FWYHenF87OODINn+seRiHOn8patNT TyqgkccDI/pMt1/4jZZOn1t7kNCLj72LXzWJFQYTx957OpGNZo2G+8qSC7aeKGENY8oY C3s3Ol28qyKMBKXRTyOogXIjmFE4sCs7EGDMARkuGJfELuoLGPoEnjC7Ozf17eNdSgbj Xihw== X-Forwarded-Encrypted: i=1; AJvYcCX1LawtDJsOrKHyek5cb528T26saNv8YxIFD7Mk4W/LZ9z3Dic2ab5rFbLAV0Z61ZaE7dF/Ebk9+fkyy5JXHf0=@freebsd.org X-Gm-Message-State: AOJu0YyzScb087cGi9aLEQLChd0OY9AWencnXYXdeFSqCxisjC7Tj1Os lJv/hNcJWhhDo4lrdtcU+PUtUsSi29de951nNxXZMDRk+GPNMLj/rvqhe6bb8qCbgd3tih4JkzV yWOFvQBfvlh9wNlNZ6/AxBjnzsnwKFeK4 X-Gm-Gg: ASbGncucTIvnLoTUb8/RhlvGUw12cKCpD6eMkfWQBB+ctYi3iXgq20bGIhCRXUT4deX hWc+NJDOW7i0xlJKMKmuEoUCm4RR3bpEy0Ddie5Q= X-Google-Smtp-Source: AGHT+IGFTtxpCISGEEYdBtUKpQPadsOH2dAHdtbIQRNzWgqTTl7X7EguIAvt4DnJOVaSOU4bHdAeioJ2iwzIZJlpmuY= X-Received: by 2002:a05:6512:3f0c:b0:540:2223:9b0b with SMTP id 2adb3069b0e04-54229561953mr20236483e87.35.1736055196103; Sat, 04 Jan 2025 21:33:16 -0800 (PST) List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@FreeBSD.org MIME-Version: 1.0 References: <9e71d8eb-74c3-4bcb-89b1-90d4f9746168@quip.cz> <33db3282-25c4-42fb-8d97-1918d52fa9e2@denninger.net> <4094b79b-c54a-4953-b693-1b4e8387cf9f@freebsd.org> <87928610-fcad-400e-b7b3-076c6d3f1200@freebsd.org> <12dcc55d-67ae-467b-9249-3d60047d05f0@denninger.net> <04794cad-eda5-4ab8-ae29-4cc4d53ac033@freebsd.org> In-Reply-To: <04794cad-eda5-4ab8-ae29-4cc4d53ac033@freebsd.org> From: Chris Torek Date: Sat, 4 Jan 2025 21:33:04 -0800 Message-ID: Subject: Re: curious crashes when under memory pressure To: Craig Leres Cc: Karl Denninger , freebsd-hackers@freebsd.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspamd-Queue-Id: 4YQmDv2YyCz449c X-Spamd-Bar: ---- X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; TAGGED_FROM(0.00)[]; ASN(0.00)[asn:15169, ipnet:2a00:1450::/32, country:US] On Sat, Jan 4, 2025 at 2:04=E2=80=AFPM Craig Leres wrot= e: > Chris said he was "swapping to a zfs mirror" but I'm swapping to a gmirro= r. I thought I was, but now I'm not sure any more :-) (I set this up many months ago). Poking around, it looks like I have a three way geom mirror (why 3? I have no idea, well, some vague idea, but, well...). I have `/dev/mirror/swap` as the swapon device in `/etc/fstab`, and `gmirror list` says: Geom name: swap State: COMPLETE Components: 3 Balance: load Slice: 4096 Flags: NONE GenID: 0 SyncID: 1 ID: 777312945 Type: AUTOMATIC Providers: 1. Name: mirror/swap Mediasize: 137438952960 (128G) Sectorsize: 512 Stripesize: 4096 Stripeoffset: 0 Mode: r1w1e0 Consumers: 1. Name: ada2p3 Mediasize: 137438953472 (128G) Sectorsize: 512 Stripesize: 4096 Stripeoffset: 0 Mode: r1w1e1 State: ACTIVE Priority: 2 Flags: NONE GenID: 0 SyncID: 1 ID: 466179938 [repeat for ada1p3 and ada0p3 but with priorities counting down to 0 and with different IDs.] So I guess I'm swapping to a geom mirror. I suspect it has three drives in it because I was originally thinking I had to swap to a zfs vdev mirror. You can stop here, but if not: MORE DETAILS I originally put four drives in the machine (3 8TB + 1 old 2 TB), and only three were working (ada0 through 2), so I set up a three-way zfs file system on it. The fourth one worked on Linux but not on FreeBSD. Eventually I moved it to a different channel and it started working fine and I still don't know what that's all about, though there were several kernel updates along the way (patch releases of FreeBSD 14) as well. At some point I discovered you can't crash-dump to a mirror, so I set up a 64 GB partition on ada3 and made it the dump device. It might not be working, I haven't forcibly tested it yet. Worse, `gpart show -l` shows it as `swap2`, a duplicate of ada2's `swap2` except half the size (??). It shows up fine as /dev/label/crash though. `geom swap list -a` says: Geom name: swap Consumers: 1. Name: mirror/swap Mediasize: 137438952960 (128G) Sectorsize: 512 Stripesize: 4096 Stripeoffset: 0 Mode: r1w1e0 Strippng `geom -t` output a bit (egrep disk\|swap): ada3p2 LABEL gpt/swap2 gpt/swap2 DEV swap MIRROR mirror/swap mirror/swap DEV swap SWAP swap MIRROR mirror/swap mirror/swap DEV swap SWAP swap MIRROR mirror/swap mirror/swap DEV swap SWAP swap.sync MIRROR Here's `gpart show -p | grep swap`: 2048 134217728 ada3p2 freebsd-swap (64G) 534528 268435456 ada2p3 freebsd-swap (128G) 534528 268435456 ada1p3 freebsd-swap (128G) 534528 268435456 ada0p3 freebsd-swap (128G) and `gpart show -l | grep swap`: 2048 134217728 2 swap2 (64G) 534528 268435456 3 swap2 (128G) 534528 268435456 3 swap1 (128G) 534528 268435456 3 swap0 (128G) I went straight from an original FreeBSD 9 setup with an ancient MBR (persisting unchanged through several upgrades) to FreeBSD 14 (now 15) at home, so I get a bit lost between gpart, geom, and zfs/zpool differences at times. Chris From nobody Sun Jan 5 05:46:57 2025 X-Original-To: freebsd-hackers@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4YQmXw06Zbz5kP7t; Sun, 05 Jan 2025 05:47:12 +0000 (UTC) (envelope-from yaroslaw.mashko@gmail.com) Received: from mail-pj1-x1035.google.com (mail-pj1-x1035.google.com [IPv6:2607:f8b0:4864:20::1035]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "WR4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4YQmXt44k2z46Zd; Sun, 5 Jan 2025 05:47:10 +0000 (UTC) (envelope-from yaroslaw.mashko@gmail.com) Authentication-Results: mx1.freebsd.org; none Received: by mail-pj1-x1035.google.com with SMTP id 98e67ed59e1d1-2eeb4d643a5so19491558a91.3; Sat, 04 Jan 2025 21:47:10 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1736056029; x=1736660829; darn=freebsd.org; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc:subject:date:message-id:reply-to; bh=AzaIj10sjlLP7THmsCIh6dJ0lEB8QSuSMbcpIGl9HRU=; b=k0pNSLn1lE5OEmII3QTSFtvdWT6fypJ8hWun2VmXTjLvwadN5aqpOb7wPb4eYAG55j mkD3mt4AqnlBeVpbGw54PBVFyalPzS52TLJZDuiXn9eTiGcsv7k8mAaecyTYgf6AkrW4 R/yfDli1bRO8MwdqQiQVkIgtXOagHZm2M5tIEQ1kgAlT/jHLs4+ciSy6XvZVNYD1mnHc 657jEIaCnu7jTC0ucpb39+GDFP6niZsfVxCo+HFQLJQisDvUstCeiO22ZE09gtgcyfjZ M9dP4tI5s0GRV7YZ+Q5Rc4lZB3x+gbDr06Cmx3Rg0vQ+nDn+QXq0fIPlZwARbtolVhMn 4JUw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1736056029; x=1736660829; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=AzaIj10sjlLP7THmsCIh6dJ0lEB8QSuSMbcpIGl9HRU=; b=Ze9SzW8HLkk48A5+2DKX8iRd7mO61KMybGKdAz71gsVnrr3wzjOgLYdirCOOLCtwKY d9xTM/wAmJtPKxMa2cPosB9BFwXLEDsXhjbCP/M7Xqf5HokLxSyig/kL/9FhgjZaGESX szAZKxyPCD22mKB+odL7lW1IOEPSjzz03BexZwEpUTa/oB+yjisJK4YcWaNLPvuB3gI/ Xcm7JaE8v1gAOZy6UlAmjPFkImL44bQpQwRZWLYNW4q07HljdjnIh5NJaYpDGUJGKEJ7 XtIThNIasjljBPbAp8XPH9/9SbA05fDjPv5xqC/Y0eEmCEdmx6HNNX2P1Kqdokkab1iQ DY5w== X-Forwarded-Encrypted: i=1; AJvYcCUG0a/nLChjRBN4N3KkCHtI/Btk+PEaptZqjQ0lspw7z1/BLx4reqE57ASvaoA7YoFsppOKgI1e@freebsd.org X-Gm-Message-State: AOJu0Yx19ANiXyk38CSkIGdgjaCy23aj6GQ0Rh+mwefQ6MEAjFRbek3y 8bEz/dFEGDulkQx9M3hnIHbdg5hVSSbd9B0PtI6ahOffBbSDVArueI8YWpmvFw02s1CJR37RFlK mANrgaljUNM3UHXafdD2sU0BdcR+MfQ== X-Gm-Gg: ASbGncuO8bt9EyPGx4qPVWd+RSOeExIRef2bVjiuSObPUyzr3QYtour3gAzgwM8ch5u SWop2ipfC/WZUt8f4vmta9aqsa9WZujlBGSUfRQ== X-Google-Smtp-Source: AGHT+IFDEkb7PqSKUsANYD6gPxMmlf1DRVbCFimMLgGxm1cXZPghWpDftXZjyctu9WXe/8mLQRnZKd59lIMyYJWPer8= X-Received: by 2002:a05:6a00:8d8c:b0:729:597:4fa9 with SMTP id d2e1a72fcca58-72abdee24cbmr80483775b3a.22.1736056029323; Sat, 04 Jan 2025 21:47:09 -0800 (PST) List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@FreeBSD.org MIME-Version: 1.0 References: In-Reply-To: From: =?UTF-8?B?0K/RgNC+0YHQu9Cw0LIg0JzQsNGI0LrQvg==?= Date: Sun, 5 Jan 2025 07:46:57 +0200 X-Gm-Features: AbW1kvbsqKce2THO6beC07BiKvp9MAnfBmMMZACmKT-oXkMbPz4zuWNT_5V5lho Message-ID: Subject: Re: GSoC project Ideas To: Manas Ghandat Cc: freebsd-hackers@freebsd.org, hackers@freebsd.org Content-Type: multipart/alternative; boundary="000000000000f02b6d062aef0aad" X-Rspamd-Queue-Id: 4YQmXt44k2z46Zd X-Spamd-Bar: ---- X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; TAGGED_FROM(0.00)[] --000000000000f02b6d062aef0aad Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable hi, Manas, if there has been a project, on GSoC, and you plan working on that ideas, then what are those ideas you talk about? all wishes =D1=81=D0=B1, 4 =D1=8F=D0=BD=D0=B2. 2025 =D0=B3., 21:54 Manas Ghandat : > Hi, > > I am Manas and I am interested in working on the syzkaller project ideas > mentioned at > https://wiki.freebsd.org/SummerOfCodeIdeas#syzkaller_improvements > > There has been a GSoC project in 2021 regarding the same. I wanted to kno= w > if this idea is implemented or if some parts are yet to be implemented > > Thanks, > Manas > --000000000000f02b6d062aef0aad Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

hi, Manas,

if there has been a project, on GSoC, and you plan working o= n that ideas, then what are those ideas you talk about?

all wishes


=D1=81=D0=B1, 4 =D1=8F=D0=BD=D0=B2. 2025 =D0=B3., 21:54 Man= as Ghandat <ghandatmanas@gmail= .com>:
Hi,<= div dir=3D"auto">
I am Manas and I am interested= in working on the syzkaller project ideas mentioned at=C2=A0https://wiki.freebsd.org/SummerOfCodeIdeas#syzkal= ler_improvements

The= re has been a GSoC project in 2021 regarding the same. I wanted to know if = this idea is implemented or if some parts are yet to be implemented=C2=A0

Thanks,
Manas
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hi, Manas,

if there has been a project, on GSoC, and you plan working o= n that ideas, then what are those ideas you talk about?

all wishes


=D1=81=D0=B1, 4 =D1=8F=D0=BD=D0=B2. 2025 =D0=B3., 21:54 Man= as Ghandat <ghandatmanas@gmail= .com>:
Hi,<= div dir=3D"auto">
I am Manas and I am interested= in working on the syzkaller project ideas mentioned at=C2=A0https://wiki.freebsd.org/SummerOfCodeIdeas#syzkal= ler_improvements

The= re has been a GSoC project in 2021 regarding the same. I wanted to know if = this idea is implemented or if some parts are yet to be implemented=C2=A0

Thanks,
Manas
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Sun, 05 Jan 2025 00:55:56 -0800 (PST) List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@FreeBSD.org MIME-Version: 1.0 References: In-Reply-To: From: Manas Ghandat Date: Sun, 5 Jan 2025 14:25:45 +0530 Message-ID: Subject: Re: GSoC project Ideas To: =?UTF-8?B?0K/RgNC+0YHQu9Cw0LIg0JzQsNGI0LrQvg==?= Cc: freebsd-hackers@freebsd.org, hackers@freebsd.org Content-Type: multipart/alternative; boundary="0000000000001b91e0062af1aed4" X-Rspamd-Queue-Id: 4YQrkj61mPz4Mqb X-Spamd-Bar: --- X-Spamd-Result: default: False [-4.00 / 15.00]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_SHORT(-1.00)[-1.000]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36:c]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20230601]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; FREEMAIL_TO(0.00)[gmail.com]; RCVD_TLS_LAST(0.00)[]; FROM_HAS_DN(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:~]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim]; ARC_NA(0.00)[]; FREEMAIL_FROM(0.00)[gmail.com]; TO_DN_SOME(0.00)[]; DKIM_TRACE(0.00)[gmail.com:+]; MISSING_XM_UA(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[2607:f8b0:4864:20::32a:from]; MID_RHS_MATCH_FROMTLD(0.00)[]; TO_MATCH_ENVRCPT_SOME(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; MLMMJ_DEST(0.00)[freebsd-hackers@freebsd.org,hackers@freebsd.org]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; TAGGED_RCPT(0.00)[]; RCVD_COUNT_ONE(0.00)[1]; FREEMAIL_ENVFROM(0.00)[gmail.com] --0000000000001b91e0062af1aed4 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi, I was interested in the syzkaller ( https://wiki.freebsd.org/SummerOfCodeIdeas#syzkaller_improvements) project. I wanted to know if there is stuff yet to be implemented so that I can add to it. Thanks, Manas On Sun, Jan 5, 2025 at 11:17=E2=80=AFAM =D0=AF=D1=80=D0=BE=D1=81=D0=BB=D0= =B0=D0=B2 =D0=9C=D0=B0=D1=88=D0=BA=D0=BE wrote: > hi, Manas, > > if there has been a project, on GSoC, and you plan working on that ideas, > then what are those ideas you talk about? > > all wishes > > =D1=81=D0=B1, 4 =D1=8F=D0=BD=D0=B2. 2025 =D0=B3., 21:54 Manas Ghandat : > >> Hi, >> >> I am Manas and I am interested in working on the syzkaller project ideas >> mentioned at >> https://wiki.freebsd.org/SummerOfCodeIdeas#syzkaller_improvements >> >> There has been a GSoC project in 2021 regarding the same. I wanted to >> know if this idea is implemented or if some parts are yet to be implemen= ted >> >> Thanks, >> Manas >> > --0000000000001b91e0062af1aed4 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
On Sun, Jan 5, 2025 at 11:17=E2=80=AFAM =D0=AF=D1=80=D0=BE=D1=81=D0=BB= =D0=B0=D0=B2 =D0=9C=D0=B0=D1=88=D0=BA=D0=BE <yaroslaw.mashko@gmail.com> wrote:

hi, Manas,

if there has been a project, on GSoC, and you plan working o= n that ideas, then what are those ideas you talk about?

all wishes


=D1=81= =D0=B1, 4 =D1=8F=D0=BD=D0=B2. 2025 =D0=B3., 21:54 Manas Ghandat <ghandatmanas@gmail.com= >:
Hi,

I am Manas and = I am interested in working on the syzkaller project ideas mentioned at=C2= =A0https://wiki.freebsd.org/SummerO= fCodeIdeas#syzkaller_improvements

There has been a GSoC project in 2021 regarding the same. I w= anted to know if this idea is implemented or if some parts are yet to be im= plemented=C2=A0

Thanks,<= /div>
Manas
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Sun, 05 Jan 2025 00:55:56 -0800 (PST) List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@FreeBSD.org MIME-Version: 1.0 References: In-Reply-To: From: Manas Ghandat Date: Sun, 5 Jan 2025 14:25:45 +0530 Message-ID: Subject: Re: GSoC project Ideas To: =?UTF-8?B?0K/RgNC+0YHQu9Cw0LIg0JzQsNGI0LrQvg==?= Cc: freebsd-hackers@freebsd.org, hackers@freebsd.org Content-Type: multipart/alternative; boundary="0000000000001b91e0062af1aed4" X-Rspamd-Queue-Id: 4YQrkj61mPz4Mqb X-Spamd-Bar: --- X-Spamd-Result: default: False [-4.00 / 15.00]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_SHORT(-1.00)[-1.000]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36:c]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20230601]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; FREEMAIL_TO(0.00)[gmail.com]; RCVD_TLS_LAST(0.00)[]; FROM_HAS_DN(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:~]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim]; ARC_NA(0.00)[]; FREEMAIL_FROM(0.00)[gmail.com]; TO_DN_SOME(0.00)[]; DKIM_TRACE(0.00)[gmail.com:+]; MISSING_XM_UA(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[2607:f8b0:4864:20::32a:from]; MID_RHS_MATCH_FROMTLD(0.00)[]; TO_MATCH_ENVRCPT_SOME(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; MLMMJ_DEST(0.00)[freebsd-hackers@freebsd.org,hackers@freebsd.org]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; TAGGED_RCPT(0.00)[]; RCVD_COUNT_ONE(0.00)[1]; FREEMAIL_ENVFROM(0.00)[gmail.com] --0000000000001b91e0062af1aed4 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi, I was interested in the syzkaller ( https://wiki.freebsd.org/SummerOfCodeIdeas#syzkaller_improvements) project. I wanted to know if there is stuff yet to be implemented so that I can add to it. Thanks, Manas On Sun, Jan 5, 2025 at 11:17=E2=80=AFAM =D0=AF=D1=80=D0=BE=D1=81=D0=BB=D0= =B0=D0=B2 =D0=9C=D0=B0=D1=88=D0=BA=D0=BE wrote: > hi, Manas, > > if there has been a project, on GSoC, and you plan working on that ideas, > then what are those ideas you talk about? > > all wishes > > =D1=81=D0=B1, 4 =D1=8F=D0=BD=D0=B2. 2025 =D0=B3., 21:54 Manas Ghandat : > >> Hi, >> >> I am Manas and I am interested in working on the syzkaller project ideas >> mentioned at >> https://wiki.freebsd.org/SummerOfCodeIdeas#syzkaller_improvements >> >> There has been a GSoC project in 2021 regarding the same. I wanted to >> know if this idea is implemented or if some parts are yet to be implemen= ted >> >> Thanks, >> Manas >> > --0000000000001b91e0062af1aed4 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
On Sun, Jan 5, 2025 at 11:17=E2=80=AFAM =D0=AF=D1=80=D0=BE=D1=81=D0=BB= =D0=B0=D0=B2 =D0=9C=D0=B0=D1=88=D0=BA=D0=BE <yaroslaw.mashko@gmail.com> wrote:

hi, Manas,

if there has been a project, on GSoC, and you plan working o= n that ideas, then what are those ideas you talk about?

all wishes


=D1=81= =D0=B1, 4 =D1=8F=D0=BD=D0=B2. 2025 =D0=B3., 21:54 Manas Ghandat <ghandatmanas@gmail.com= >:
Hi,

I am Manas and = I am interested in working on the syzkaller project ideas mentioned at=C2= =A0https://wiki.freebsd.org/SummerO= fCodeIdeas#syzkaller_improvements

There has been a GSoC project in 2021 regarding the same. I w= anted to know if this idea is implemented or if some parts are yet to be im= plemented=C2=A0

Thanks,<= /div>
Manas
--0000000000001b91e0062af1aed4-- From nobody Sun Jan 5 10:29:49 2025 X-Original-To: freebsd-hackers@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4YQtqB2H0Nz5kgwF for ; Sun, 05 Jan 2025 10:29:58 +0000 (UTC) (envelope-from developer@lorenzosalvadore.it) Received: from mail-10626.protonmail.ch (mail-10626.protonmail.ch [79.135.106.26]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "protonmail.com", Issuer "R10" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4YQtq9717Cz4V6p for ; Sun, 5 Jan 2025 10:29:57 +0000 (UTC) (envelope-from developer@lorenzosalvadore.it) Authentication-Results: mx1.freebsd.org; none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=lorenzosalvadore.it; s=protonmail2; t=1736072995; x=1736332195; bh=cij9gH9MddEfz/uBgUSA0qDFXTrAhtEUnTO40ZA5l08=; h=Date:To:From:Cc:Subject:Message-ID:In-Reply-To:References: Feedback-ID:From:To:Cc:Date:Subject:Reply-To:Feedback-ID: Message-ID:BIMI-Selector:List-Unsubscribe:List-Unsubscribe-Post; b=VAeMTrI8Pk8zSvmMcx1Ej19FspL63RLZFzktDbnH/WCH/XyXbc3LR7w+3bdS1TR4h XW/rtN2ThcxY4ce7y8KigEEY8I4SPlqVgV+f86djTlMrgdcWazieucBK4aAPpV7z2R UTRc3dWGSlMvlYk7N7BYpeOHgnaaW61h3GTU/a/jr04/wLtRo2kXU2UX5QYg7Q4FlO ry0k2gPjO9PQIT7VJLC8Q06C8cWV2hliSjVSx51m3HEzYdQgSnn13D/DKokrc8lI0X 34DX5TV9z8lVzGofq9Dq1kdRbapwZHAl2VGcPvRpBwmSTfwo0s1y+QWxeFTqbD7TRo L3qw89A0TGaVQ== Date: Sun, 05 Jan 2025 10:29:49 +0000 To: "ghandatmanas@gmail.com" From: Lorenzo Salvadore Cc: "yaroslaw.mashko@gmail.com" , "freebsd-hackers@freebsd.org" , "hackers@freebsd.org" Subject: Re: GSoC project Ideas Message-ID: In-Reply-To: References: Feedback-ID: 53711648:user:proton X-Pm-Message-ID: d8086e5f5bf6aac42c261bf88d93c5b3dfc3e5a0 List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@FreeBSD.org MIME-Version: 1.0 Content-Type: multipart/alternative; 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Sun, 05 Jan 2025 10:29:58 +0000 (UTC) (envelope-from developer@lorenzosalvadore.it) Received: from mail-10625.protonmail.ch (mail-10625.protonmail.ch [79.135.106.25]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "protonmail.com", Issuer "R10" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4YQtq97181z4Twg for ; Sun, 5 Jan 2025 10:29:57 +0000 (UTC) (envelope-from developer@lorenzosalvadore.it) Authentication-Results: mx1.freebsd.org; none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=lorenzosalvadore.it; s=protonmail2; t=1736072995; x=1736332195; bh=cij9gH9MddEfz/uBgUSA0qDFXTrAhtEUnTO40ZA5l08=; h=Date:To:From:Cc:Subject:Message-ID:In-Reply-To:References: Feedback-ID:From:To:Cc:Date:Subject:Reply-To:Feedback-ID: Message-ID:BIMI-Selector:List-Unsubscribe:List-Unsubscribe-Post; b=VAeMTrI8Pk8zSvmMcx1Ej19FspL63RLZFzktDbnH/WCH/XyXbc3LR7w+3bdS1TR4h XW/rtN2ThcxY4ce7y8KigEEY8I4SPlqVgV+f86djTlMrgdcWazieucBK4aAPpV7z2R UTRc3dWGSlMvlYk7N7BYpeOHgnaaW61h3GTU/a/jr04/wLtRo2kXU2UX5QYg7Q4FlO ry0k2gPjO9PQIT7VJLC8Q06C8cWV2hliSjVSx51m3HEzYdQgSnn13D/DKokrc8lI0X 34DX5TV9z8lVzGofq9Dq1kdRbapwZHAl2VGcPvRpBwmSTfwo0s1y+QWxeFTqbD7TRo L3qw89A0TGaVQ== Date: Sun, 05 Jan 2025 10:29:49 +0000 To: "ghandatmanas@gmail.com" From: Lorenzo Salvadore Cc: "yaroslaw.mashko@gmail.com" , "freebsd-hackers@freebsd.org" , "hackers@freebsd.org" Subject: Re: GSoC project Ideas Message-ID: In-Reply-To: References: Feedback-ID: 53711648:user:proton X-Pm-Message-ID: d8086e5f5bf6aac42c261bf88d93c5b3dfc3e5a0 List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@FreeBSD.org MIME-Version: 1.0 Content-Type: multipart/alternative; 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