From: David Rientjes <rientjes@google.com>
To: Dave Jones <davej@redhat.com>,
linux-mm@kvack.org, Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: 3.4-rc4 oom killer out of control.
Date: Thu, 26 Apr 2012 15:20:34 -0700 (PDT) [thread overview]
Message-ID: <alpine.DEB.2.00.1204261517100.28376@chino.kir.corp.google.com> (raw)
In-Reply-To: <20120426215257.GA12908@redhat.com>
On Thu, 26 Apr 2012, Dave Jones wrote:
> /sys/kernel/mm/ksm/full_scans is increasing constantly
>
> full_scans: 146370
> pages_shared: 1
> pages_sharing: 4
> pages_to_scan: 1250
> pages_unshared: 867
> pages_volatile: 1
> run: 1
> sleep_millisecs: 20
>
full_scans is just a counter of how many times it has scanned mergable
memory so it should be increasing constantly. Whether pages_to_scan ==
1250 and sleep_millisecs == 20 is good for your system is unknown. You
may want to try disabling ksm entirely (echo 0 > /sys/kernel/mm/ksm/run)
to see if it significantly increases responsiveness for your workload.
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next prev parent reply other threads:[~2012-04-26 22:20 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-26 19:35 Dave Jones
2012-04-26 20:53 ` Dave Jones
2012-04-26 22:30 ` David Rientjes
2012-04-26 21:40 ` David Rientjes
2012-04-26 21:52 ` Dave Jones
2012-04-26 22:20 ` David Rientjes [this message]
2012-04-26 22:44 ` Dave Jones
2012-04-26 22:49 ` David Rientjes
2012-04-26 22:54 ` Dave Jones
2012-04-27 0:54 ` Steven Rostedt
2012-04-27 2:02 ` Dave Jones
2012-05-03 22:14 ` David Rientjes
2012-05-03 22:29 ` Dave Jones
2012-05-17 21:33 ` [patch] mm, oom: normalize oom scores to oom_score_adj scale only for userspace David Rientjes
2012-05-17 21:50 ` Andrew Morton
2012-05-23 7:15 ` [patch v2] " David Rientjes
2012-05-23 22:37 ` Andrew Morton
2012-05-24 6:02 ` David Rientjes
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