From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm0-f52.google.com (mail-wm0-f52.google.com [74.125.82.52]) by kanga.kvack.org (Postfix) with ESMTP id 837786B0038 for ; Mon, 16 Nov 2015 11:15:23 -0500 (EST) Received: by wmww144 with SMTP id w144so126326478wmw.0 for ; Mon, 16 Nov 2015 08:15:23 -0800 (PST) Received: from mx2.suse.de (mx2.suse.de. [195.135.220.15]) by mx.google.com with ESMTPS id n206si26582979wma.29.2015.11.16.08.15.19 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Mon, 16 Nov 2015 08:15:19 -0800 (PST) Date: Mon, 16 Nov 2015 17:15:18 +0100 From: Michal Hocko Subject: Re: memory reclaim problems on fs usage Message-ID: <20151116161518.GI14116@dhcp22.suse.cz> References: <201511102313.36685.arekm@maven.pl> <201511151229.23312.arekm@maven.pl> <201511152313.IJI23764.OHVFJFMSFOtOLQ@I-love.SAKURA.ne.jp> <201511151549.35299.arekm@maven.pl> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <201511151549.35299.arekm@maven.pl> Sender: owner-linux-mm@kvack.org List-ID: To: Arkadiusz =?utf-8?Q?Mi=C5=9Bkiewicz?= Cc: Tetsuo Handa , htejun@gmail.com, cl@linux.com, linux-mm@kvack.org, xfs@oss.sgi.com On Sun 15-11-15 15:49:35, Arkadiusz MiA?kiewicz wrote: > On Sunday 15 of November 2015, Tetsuo Handa wrote: > > Arkadiusz Miskiewicz wrote: > > > On Sunday 15 of November 2015, Tetsuo Handa wrote: > > > > I think that the vmstat statistics now have correct values. > > > > > > > > > But are these patches solving the problem or just hiding it? > > > > > > > > Excuse me but I can't judge. > > > > > > > > If you are interested in monitoring how vmstat statistics are changing > > > > under stalled condition, you can try below patch. > > > > > > Here is log with this and all previous patches applied: > > > http://ixion.pld-linux.org/~arekm/log-mm-5.txt.gz > > > > Regarding "Node 0 Normal" (min:7104kB low:8880kB high:10656kB), > > all free: values look sane to me. I think that your problem was solved. > > Great, thanks! > > Will all (or part) of these patches > > http://sprunge.us/GYBb Migrate reserves are not a stable material I am afraid. "vmstat: explicitly schedule per-cpu work on the CPU we need it to run on" was not marked for stable either but I am not sure why it should make any difference for your load. I understand that testing this is really tedious but it would be better to know which of the patches actually made a difference. > http://sprunge.us/XWUX (after it gets merged) Yes I plan to mark this one for stable. > be pushed to stable@ or are too risky for stable ? > > > > > $ grep "Normal free:" log-mm-5.txt | cut -b 44- | awk -F' ' ' { print $4 } > > ' | cut -b 6- | sort -g 8608kB > > 8636kB > > 8920kB > > 8920kB > > 8952kB > > 8968kB > > 8980kB > > (...snipped...) > > 215364kB > > 290068kB > > 290428kB > > 291176kB > > 292836kB > > 303992kB > > 306468kB > > 318080kB > > 319548kB > > > > $ grep "Normal free:" log-mm-1.txt | cut -b 44- | awk -F' ' ' { print $4 } > > ' | cut -b 6- | sort -g 0kB > > 40kB > > 128kB > > 128kB > > 128kB > > 128kB > > 128kB > > 128kB > > 128kB > > 128kB > > (...snipped...) > > 412kB > > 616kB > > 1268kB > > 1544kB > > 1696kB > > 2756kB > > 2756kB > > 2756kB > > 2756kB > > 2756kB > > 2756kB > > 2756kB > > > -- > Arkadiusz MiA?kiewicz, arekm / ( maven.pl | pld-linux.org ) -- Michal Hocko SUSE Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org