linux-kernel - Re: 3.4-rc4 oom killer out of control.

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Message-ID: <20120427020224.GA22927@redhat.com>
Date:	Thu, 26 Apr 2012 22:02:24 -0400
From:	Dave Jones <davej@...hat.com>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	David Rientjes <rientjes@...gle.com>, linux-mm@...ck.org,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Subject: Re: 3.4-rc4 oom killer out of control.

On Thu, Apr 26, 2012 at 08:54:48PM -0400, Steven Rostedt wrote:
 
 > >  > 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.
 > > 
 > 
 > You didn't happen to see any RCU CPU stalls, did you?

nothing got reported in dmesg..

	Dave
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