From owner-freebsd-current@freebsd.org Sat Sep 14 06:00:07 2019 Return-Path: Delivered-To: freebsd-current@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 C4835E8700 for ; Sat, 14 Sep 2019 06:00:07 +0000 (UTC) (envelope-from marklmi@yahoo.com) Received: from sonic309-15.consmr.mail.bf2.yahoo.com (sonic309-15.consmr.mail.bf2.yahoo.com [74.6.129.125]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 46VhgB5FRBz4Y9l for ; Sat, 14 Sep 2019 06:00:06 +0000 (UTC) (envelope-from marklmi@yahoo.com) X-YMail-OSG: LzuxDPwVM1nZysMYI6qdNL2WhSIxhlL6.iUUJjOg2q50oQkptBuQaaahKUmBGlW JLE2ErGM.knpr88moy6hcVfpqQafBjkfCVk3bOaV.CrWYoAeGJQbmd6F70vgnRQNx6Dlizh.jt0Q cYJbUGvVmoGxuGTcCeYpqpgd5CROPUI8jyakTLP1jRsia9XmrWmmY0GecnHEZzj89y4m5nim07tj QJLX64nffurNcRMRDoOzzwev_udCthDxACHr9f7BW_e2IA2aGihifob0JC.5Z036UuDNuZQeQwhI F_KzDEHyQSgTPMfT8zluSQCQQmAex9KPjEzau4VzJY3mxjLjvR4DglTyxbFBYu5H8kkKf5HSZPvG o881Ro.3mLKohXSdrGL.RUjA2B5nTAMbrWu1MRxwdtMvPDFsEWTox.8PvqIz9UWdSKLckszrtTGf 4vqOUerIvzB7lfcuomC7lQpb4xBTTY49ehI0RDwGlTfWWnRXSsKsGP31f5ue_WyiH0NG1i.8kf2B DsTM75XNawRd7riAt7jcjLo0N58szHjb.9EYPOVQpZQnJeon98deQBPIsds9FstgMXDr2WaVivZM Q0ZDRT44NZh4CGYcrP1MrwlgdR4elCf_JZ8WiG0l7G9ngmrdSpXUuQGwfg1pYViRPEfKEd1pXeHs 6UimJBt0ePFo0hu_Q26TvmoNuaDuIs0A7X09d_pIXzMuz19D.hKg6LbWLL2iPpjOtEwyefC0Ghxm 6VJ25pM0585Smv4MrSPDsj9G0x9OLkqRvGgo9BPgCT1NHS7Jpou7psffsuOliQrRdvTLxqc6.DOL zqfNlt2AJFaIZz0N0q0F30z3TL_7lw0QYUcP4UMqcYSunzz_fymioJjg3ZgzaZPls00QPC6K8yIq kuqWz9vGbH5aIR5guN_CGkOGizRnoH0nUh4UBO.Nij9iS5QhK53LayCgNZ_3Q_VbFtQVSvKBfPAo aNh3khxvjbQpbsX3oRgI.cSGsUSsseaKL0JT6C8z41XpDbwvyve0V6FNuse6RfZR9D68ZPT_IffY iyZfPWP1b9XfxrW9LkxVNFiRoo1tHlrC8G1lwSWvuCWn.5V.mAVQRolpuC8wm6_3fKKzcCO5tJFa Z_SOhKnqas4pyccK6l3nu99v2rHaZXje5GOVWCE.2HlLF2AAYJHdRycwzHT.8LfeL7u7Jjvo5rCv 2qelU7IpPOKEnEB8GJG45ahh6sXPSB2hJjeAG8h5IJtg_TxPZwJP9OfNg0TSibyccn.XCksyCHJc garohi2RkN3uBxhit8XITTbFHdLQZff02FZeMfD7PIfMxpDUJ1Z2GSW4j8A-- Received: from sonic.gate.mail.ne1.yahoo.com by sonic309.consmr.mail.bf2.yahoo.com with HTTP; Sat, 14 Sep 2019 06:00:05 +0000 Received: by smtp407.mail.bf1.yahoo.com (Oath Hermes SMTP Server) with ESMTPA ID 6ba0ac3b58b1275bd760445b71d0f5e0; Sat, 14 Sep 2019 06:00:00 +0000 (UTC) From: Mark Millard Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (Mac OS X Mail 12.4 \(3445.104.11\)) Subject: Re: spurious out of swap kills Message-Id: <28BF21DA-8B16-4CD8-8E5E-C1B596FE3684@yahoo.com> Date: Fri, 13 Sep 2019 22:59:58 -0700 To: bob prohaska , FreeBSD Current X-Mailer: Apple Mail (2.3445.104.11) X-Rspamd-Queue-Id: 46VhgB5FRBz4Y9l X-Spamd-Bar: / X-Spamd-Result: default: False [0.72 / 15.00]; R_SPF_ALLOW(-0.20)[+ptr:yahoo.com]; FREEMAIL_FROM(0.00)[yahoo.com]; MV_CASE(0.50)[]; TO_DN_ALL(0.00)[]; DKIM_TRACE(0.00)[yahoo.com:+]; RCPT_COUNT_TWO(0.00)[2]; DMARC_POLICY_ALLOW(-0.50)[yahoo.com,reject]; FROM_EQ_ENVFROM(0.00)[]; RCVD_TLS_LAST(0.00)[]; MIME_TRACE(0.00)[0:+]; FREEMAIL_ENVFROM(0.00)[yahoo.com]; ASN(0.00)[asn:26101, ipnet:74.6.128.0/21, country:US]; MID_RHS_MATCH_FROM(0.00)[]; DWL_DNSWL_NONE(0.00)[yahoo.com.dwl.dnswl.org : 127.0.5.0]; ARC_NA(0.00)[]; FAKE_REPLY(1.00)[]; R_DKIM_ALLOW(-0.20)[yahoo.com:s=s2048]; NEURAL_HAM_MEDIUM(-0.04)[-0.039,0]; FROM_HAS_DN(0.00)[]; MIME_GOOD(-0.10)[text/plain]; IP_SCORE(0.00)[ip: (3.36), ipnet: 74.6.128.0/21(1.45), asn: 26101(1.16), country: US(-0.05)]; IP_SCORE_FREEMAIL(0.00)[]; TO_MATCH_ENVRCPT_SOME(0.00)[]; NEURAL_SPAM_LONG(0.26)[0.256,0]; RCVD_IN_DNSWL_NONE(0.00)[125.129.6.74.list.dnswl.org : 127.0.5.0]; RCVD_COUNT_TWO(0.00)[2] X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 14 Sep 2019 06:00:07 -0000 bob prohaska fbsd at www.zefox.net wrote on Fri Sep 13 16:24:57 UTC 2019 : > Not sure this is relevant, but in compiling chromium on a Pi3 with 6 GB > of swap the job completed successfully some months ago, with peak swap > use around 3.5 GB. The swap layout was sub-optimal, with a 2 GB partition > combined with a 4 GB partition. A little over 4GB total seems usable. > > A few days ago the same attempt stopped with a series of OOMA kills, > but in each case simply restarting allowed the compile to pick up > where it left off and continue, eventually finishing with a runnable > version of chromium. In this case swap use peaked a little over 4 GB. > > Might this suggest the machine isn't freeing swap in a timely manner? Are you saying that your increases to: vm.pageout_oom_seq no longer prove sufficient? What value for vm.pageout_oom_seq were you using that got the recent failures? (Mark Johnston's slow_swap.diff patch [and related] for investigations of some OOM killing contributions never became official and has not been updated to apply to updated code. It has been over a year since those patches were used for the arm small board computer investigations that lead to my learning about vm.pageout_oom_seq .) If more or different configuration/tuning is required, I'm going to eventually want to learn about it as well. === Mark Millard marklmi at yahoo.com ( dsl-only.net went away in early 2018-Mar)