From nobody Fri May 13 20:43:11 2022 X-Original-To: freebsd-current@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 A63331AE5259 for ; Fri, 13 May 2022 20:43:15 +0000 (UTC) (envelope-from pete@nomadlogic.org) Received: from mail.nomadlogic.org (mail.nomadlogic.org [66.165.241.226]) (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 "mail.nomadlogic.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4L0LFZ3jzLz3Jd9 for ; Fri, 13 May 2022 20:43:13 +0000 (UTC) (envelope-from pete@nomadlogic.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nomadlogic.org; s=04242021; t=1652474592; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=zlcB5/xhvYboIcqWKApBUN8ol8j5ykXBBuCoGCxsJYw=; b=kkZiGX2YTZHvIGjM09H1vkreGysliSyuPzbtgMFLjSzO6sMx3pdCX0sbeC2ISy2ZBHVcwc UTv1bLmuI2xWmW+PHGskzZnptQwxZfZYU3NYubLPo/h6qTDZb9UUrZcNxWkJYgoRfQCSNd LPi/HujnT+M2gvIxsD1Jfiw52gYGb9o= Received: from [192.168.1.160] (cpe-24-24-168-214.socal.res.rr.com [24.24.168.214]) by mail.nomadlogic.org (OpenSMTPD) with ESMTPSA id 84ed5f9f (TLSv1.3:TLS_AES_256_GCM_SHA384:256:NO) for ; Fri, 13 May 2022 20:43:11 +0000 (UTC) Content-Type: multipart/mixed; boundary="------------y3V06LKg9WtVz16sasyhpvp0" Message-ID: Date: Fri, 13 May 2022 13:43:11 -0700 List-Id: Discussions about the use of FreeBSD-current List-Archive: https://lists.freebsd.org/archives/freebsd-current List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-current@freebsd.org MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:91.0) Gecko/20100101 Thunderbird/91.9.0 Subject: Re: Chasing OOM Issues - good sysctl metrics to use? Content-Language: en-US To: freebsd-current@freebsd.org References: <83A713B9-A973-4C97-ACD6-830DF6A50B76.ref@yahoo.com> <83A713B9-A973-4C97-ACD6-830DF6A50B76@yahoo.com> <94B2E2FD-2371-4FEA-8E01-F37103F63CC0@yahoo.com> <0fcb5a4a-5517-e57b-2b69-4f3b3b10589a@nomadlogic.org> <464ED220-0DE4-4D2F-9DA2-AFD00D8D42B7@yahoo.com> <446d5913-a8c2-7dd0-860b-792fa9fe7c5b@nomadlogic.org> <33B740AA-A431-49CB-9F27-50B8C49734A2@yahoo.com> <3C5C183F-1471-4139-A53C-0B3815CFC25E@yahoo.com> <75C02C8C-6A5E-4E19-AC7D-B5DB704E8F16@transactionware.com> <0E44A609-A040-4801-B3FA-E0B410F0C3D3@yahoo.com> From: Pete Wright In-Reply-To: <0E44A609-A040-4801-B3FA-E0B410F0C3D3@yahoo.com> X-Rspamd-Queue-Id: 4L0LFZ3jzLz3Jd9 X-Spamd-Bar: - Authentication-Results: mx1.freebsd.org; dkim=pass header.d=nomadlogic.org header.s=04242021 header.b=kkZiGX2Y; dmarc=pass (policy=quarantine) header.from=nomadlogic.org; spf=pass (mx1.freebsd.org: domain of pete@nomadlogic.org designates 66.165.241.226 as permitted sender) smtp.mailfrom=pete@nomadlogic.org X-Spamd-Result: default: False [-1.90 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; R_SPF_ALLOW(-0.20)[+mx]; HAS_ATTACHMENT(0.00)[]; TO_DN_NONE(0.00)[]; MIME_BASE64_TEXT_BOGUS(1.00)[]; DKIM_TRACE(0.00)[nomadlogic.org:+]; MIME_BASE64_TEXT(0.10)[]; DMARC_POLICY_ALLOW(-0.50)[nomadlogic.org,quarantine]; NEURAL_HAM_SHORT(-1.00)[-1.000]; FROM_EQ_ENVFROM(0.00)[]; SUBJECT_ENDS_QUESTION(1.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:+]; ASN(0.00)[asn:29802, ipnet:66.165.240.0/22, country:US]; MID_RHS_MATCH_FROM(0.00)[]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; R_DKIM_ALLOW(-0.20)[nomadlogic.org:s=04242021]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; MIME_GOOD(-0.10)[multipart/mixed,text/plain,text/x-patch]; PREVIOUSLY_DELIVERED(0.00)[freebsd-current@freebsd.org]; RCPT_COUNT_ONE(0.00)[1]; MLMMJ_DEST(0.00)[freebsd-current]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[] X-ThisMailContainsUnwantedMimeParts: N This is a multi-part message in MIME format. --------------y3V06LKg9WtVz16sasyhpvp0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit On 5/11/22 12:52, Mark Millard wrote: > > > Relative to avoiding hang-ups, so far it seems that > use of vm.swap_enabled=0 with vm.swap_idle_enabled=0 > makes hang-ups less likely/less frequent/harder to > produce examples of. But is no guarantee of lack of > a hang-up. Its does change the cause of the hang-up > (in that it avoids processes with kernel stacks swapped > out being involved). thanks for the above analysis Mark.  i am going to test these settings out now as i'm still seeing the lockup. this most recent hang-up was using a patch tijl@ asked me to test (attached to this email), and the default setting of vm.pageout_oom_seq: 12.  interestingly enough with the patch applied i observed a smaller amount of memory used for laundry as well as less swap space used until right before the crash. cheers, -p -- Pete Wright pete@nomadlogic.org @nomadlogicLA --------------y3V06LKg9WtVz16sasyhpvp0 Content-Type: text/x-patch; charset=UTF-8; name="vm_pageout_worker.patch" Content-Disposition: attachment; filename="vm_pageout_worker.patch" Content-Transfer-Encoding: base64 RnJvbSBmMzI2MGEyZWIxY2RjODZmOTIxNmI3OTIzZDdiMDk3MDRhMzdlNzlkIE1vbiBTZXAg MTcgMDA6MDA6MDAgMjAwMQpGcm9tOiBUaWpsIENvb3NlbWFucyA8dGlqbEBGcmVlQlNELm9y Zz4KRGF0ZTogU3VuLCA4IE1heSAyMDIyIDEyOjE5OjI4ICswMjAwClN1YmplY3Q6IFtQQVRD SF0gdm06IHN0b3AgYmFja2dyb3VuZCBsYXVuZGVyaW5nIHdoZW4gbm8gcHJvZ3Jlc3MKCkxl dCB2bV9wYWdlb3V0X2xhdW5kcnlfd29ya2VyIGdvIHRvIHNsZWVwIHdoZW4gaXQgY2Fubm90 IG1ha2UKcHJvZ3Jlc3MgKG5mcmVlZCA9PSAwKS4gIFRoaXMgYWxsb3dzIG90aGVyIHRocmVh ZHMgdG8gcnVuIHNvIHRoZXkKY2FuIGhvcGVmdWxseSBmcmVlIHNvbWUgbWVtb3J5LgoKVGhp cyByZXN0b3JlcyBiZWhhdmlvdXIgZnJvbSBiZWZvcmUgYzA5ODc2OGU0ZGFkIGFuZCA2MDY4 NDg2MjU4OGYKYW5kIHByZXZlbnRzIHNvbWUgT09NIGtpbGxzLgoKVGVzdGVkIGJ5OglQZXRl IFdyaWdodCA8cGV0ZUBub21hZGxvZ2ljLm9yZz4KTUZDIGFmdGVyOgkyIHdlZWtzCi0tLQog c3lzL3ZtL3ZtX3BhZ2VvdXQuYyB8IDYgKystLS0tCiAxIGZpbGUgY2hhbmdlZCwgMiBpbnNl cnRpb25zKCspLCA0IGRlbGV0aW9ucygtKQoKZGlmZiAtLWdpdCBhL3N5cy92bS92bV9wYWdl b3V0LmMgYi9zeXMvdm0vdm1fcGFnZW91dC5jCmluZGV4IDM2ZDVmMzI3NTgwMC4uZmJiMmNk NDEyOGYwIDEwMDY0NAotLS0gYS9zeXMvdm0vdm1fcGFnZW91dC5jCisrKyBiL3N5cy92bS92 bV9wYWdlb3V0LmMKQEAgLTEwNjEsMTUgKzEwNjEsMTMgQEAgdm1fcGFnZW91dF9sYXVuZHJ5 X3dvcmtlcih2b2lkICphcmcpCiAJCSAqIGNsZWFuIHBhZ2VzIGZyZWVkIGJ5IHRoZSBwYWdl IGRhZW1vbiBzaW5jZSB0aGUgbGFzdAogCQkgKiBiYWNrZ3JvdW5kIGxhdW5kZXJpbmcuICBU aHVzLCBhcyB0aGUgcmF0aW8gb2YgZGlydHkgdG8KIAkJICogY2xlYW4gaW5hY3RpdmUgcGFn ZXMgZ3Jvd3MsIHRoZSBhbW91bnQgb2YgbWVtb3J5IHByZXNzdXJlCi0JCSAqIHJlcXVpcmVk IHRvIHRyaWdnZXIgbGF1bmRlcmluZyBkZWNyZWFzZXMuICBXZSBlbnN1cmUKLQkJICogdGhh dCB0aGUgdGhyZXNob2xkIGlzIG5vbi16ZXJvIGFmdGVyIGFuIGluYWN0aXZlIHF1ZXVlCi0J CSAqIHNjYW4sIGV2ZW4gaWYgdGhhdCBzY2FuIGZhaWxlZCB0byBmcmVlIGEgc2luZ2xlIGNs ZWFuIHBhZ2UuCisJCSAqIHJlcXVpcmVkIHRvIHRyaWdnZXIgbGF1bmRlcmluZyBkZWNyZWFz ZXMuCiAJCSAqLwogdHJ5YmFja2dyb3VuZDoKIAkJbmNsZWFuID0gdm1kLT52bWRfZnJlZV9j b3VudCArCiAJCSAgICB2bWQtPnZtZF9wYWdlcXVldWVzW1BRX0lOQUNUSVZFXS5wcV9jbnQ7 CiAJCW5kaXJ0eSA9IHZtZC0+dm1kX3BhZ2VxdWV1ZXNbUFFfTEFVTkRSWV0ucHFfY250Owot CQlpZiAodGFyZ2V0ID09IDAgJiYgbmRpcnR5ICogaXNxcnQoaG93bWFueShuZnJlZWQgKyAx LAorCQlpZiAodGFyZ2V0ID09IDAgJiYgbmRpcnR5ICogaXNxcnQoaG93bWFueShuZnJlZWQs CiAJCSAgICB2bWQtPnZtZF9mcmVlX3RhcmdldCAtIHZtZC0+dm1kX2ZyZWVfbWluKSkgPj0g bmNsZWFuKSB7CiAJCQl0YXJnZXQgPSB2bWQtPnZtZF9iYWNrZ3JvdW5kX2xhdW5kZXJfdGFy Z2V0OwogCQl9Ci0tIAoyLjM1LjEKCg== --------------y3V06LKg9WtVz16sasyhpvp0--