From owner-freebsd-stable@freebsd.org Sun Jul 12 19:40:15 2020 Return-Path: Delivered-To: freebsd-stable@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 6ECAA36C66A for ; Sun, 12 Jul 2020 19:40:15 +0000 (UTC) (envelope-from jonc@chen.org.nz) Received: from mail-oi1-x232.google.com (mail-oi1-x232.google.com [IPv6:2607:f8b0:4864:20::232]) (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 "GTS CA 1O1" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4B4cZ62NXqz3gFq for ; Sun, 12 Jul 2020 19:40:13 +0000 (UTC) (envelope-from jonc@chen.org.nz) Received: by mail-oi1-x232.google.com with SMTP id e4so9304233oib.1 for ; Sun, 12 Jul 2020 12:40:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chen-org-nz.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=i1i0KaPoUmJb+zYjDjlufC0FkBtXwHz4Zap+UGwZ1yo=; b=o05MGJPukvC+MTNSj4E31x6yCf9GPc58l9emX5ZoF2/IuEbAcG/ywQ+yAXl7u6HX8T BzMEXZMBUnN7XFlWmhYuGRPP9Wi5pS1ERWjl9F1MqtJ+mrauUl1QeWjQShrCMrDXCe+e oi42yIXg7N6Bj5641NHdfhLRiHXHupZ8aFQnihpXni3k41PwF23Mh5KLBgI3IeI808cy s6Wvl5BOnSiC7McD14qcjkkZOsbckvArJSQ1kdpC1NmzGXD2ABrrLMcI8FXIv8L2cg7R tH2Aw89HhQZyLRR86K/aapHCPGx9JH2s2j8OGhwmA538eL8m9tnKBKRiAaCDggCHPSfb 8qxQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=i1i0KaPoUmJb+zYjDjlufC0FkBtXwHz4Zap+UGwZ1yo=; b=N8HMEpB4gKiSrVIRvWsDOkyANSTRddHOV0+xvbW0Ot+U+n1xrzoomZmrKxmVYnIXlz O+LHAReDAmIPm8M9ZhUqVZQg3vZrvXX0OetKLkedaAtgmZA0546QgZSpsVRL4D3hfcod T5Qpkf8Dcg9OsGv6C7+T9qjV3ym8a+M5YWIoEFWuFP4W8HXct6JI+tUlsygNnsZ4Dior uM/esQ/Ezs9mP7aMRwsi4+MMP+2Q8HQs+jzhNu30poNcKOM9JBK+n8rAVJ9d8Y1Jep7/ TWjrzIbFeF2Lkr8nb3dRUYxIh+cnDraOVDf2IVP0LERuv346WbHdrpi95fJz8pHaQwyb 21Bg== X-Gm-Message-State: AOAM531ZcrD/3jjaCg/hv4CYKCnELjwhI1THq/8LZrzWfxZ1KBBlLT6S UA37vjdxtYUikE/aOP2N/BlFayoDCCz1hzWGFND2KQ== X-Google-Smtp-Source: ABdhPJwPGMIjqjC+1w4kC474RuGziaPvzeiNKgU+pDGkc6pjRtue9v5NxQq8jmvDBFLLyQldIi5tFuS/SGXXH+zgkm8= X-Received: by 2002:aca:5693:: with SMTP id k141mr11233717oib.35.1594582812480; Sun, 12 Jul 2020 12:40:12 -0700 (PDT) MIME-Version: 1.0 References: <202007120628.06C6SfNB015907@sdf.org> <3afe4d2f-3b1e-a1c5-f947-5f57800317a6@gmail.com> In-Reply-To: <3afe4d2f-3b1e-a1c5-f947-5f57800317a6@gmail.com> From: Jonathan Chen Date: Mon, 13 Jul 2020 07:39:56 +1200 Message-ID: Subject: Re: swap space issues To: Don Wilde Cc: freebsd-stable@freebsd.org Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: 4B4cZ62NXqz3gFq X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=chen-org-nz.20150623.gappssmtp.com header.s=20150623 header.b=o05MGJPu; dmarc=none; spf=softfail (mx1.freebsd.org: 2607:f8b0:4864:20::232 is neither permitted nor denied by domain of jonc@chen.org.nz) smtp.mailfrom=jonc@chen.org.nz X-Spamd-Result: default: False [-2.30 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-0.92)[-0.921]; R_DKIM_ALLOW(-0.20)[chen-org-nz.20150623.gappssmtp.com:s=20150623]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; NEURAL_HAM_LONG(-0.89)[-0.893]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-stable@freebsd.org]; DMARC_NA(0.00)[chen.org.nz]; R_SPF_SOFTFAIL(0.00)[~all]; TO_MATCH_ENVRCPT_SOME(0.00)[]; DKIM_TRACE(0.00)[chen-org-nz.20150623.gappssmtp.com:+]; RCPT_COUNT_TWO(0.00)[2]; RCVD_IN_DNSWL_NONE(0.00)[2607:f8b0:4864:20::232:from]; NEURAL_HAM_SHORT(-0.19)[-0.187]; FREEMAIL_TO(0.00)[gmail.com]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[] X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 12 Jul 2020 19:40:15 -0000 On Mon, 13 Jul 2020 at 02:24, Don Wilde wrote: > On 7/11/20 11:28 PM, Scott Bennett via freebsd-stable wrote: > > I have read this entire thread to date with growing dismay, and I > > thank Donald Wilde for reporting his ongoing troubles, although they > > spoil my hopes that the kernel's memory management bugs that first became > > apparent in 11.2-RELEASE (and -STABLE around the same time) were not > > propagated into 12.x. A recent update to stable/12 source tree made it > > finally possible for me to build 12.1-STABLE under 11.4-PRERELEASE, and I > > was just about to install the upgrade when this thread appeared. > Spoiler alert. Since I gave up on Synth, I haven't had a single swap > issue. It does appear to be one particular port that drove it nuts > (apparently, one of the 'Google performance' bits, with a > mismatched-brackets problem). I have rebuilt the machine several times, > but that's more for my sense of tidiness than anything. With synth you can reduce the number of workers to just "1" (ie: Number_of_builders=1), if you just want your ports-build to complete without any stress. However, one of the reasons why I use synth is _because_ of the stress it can place on my 12-STABLE snapshots. If the system is stable and performs well when under load, I feel just that bit more assured about using it in production environments. My 2 cents. -- Jonathan Chen