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Re: 2.6.20-rc5: cp 18gb 18gb.2 = OOM killer, reproducible just like 2.16

To: Nick Piggin <nickpiggin@xxxxxxxxxxxx>
Subject: Re: 2.6.20-rc5: cp 18gb 18gb.2 = OOM killer, reproducible just like 2.16.19.2
From: Justin Piszcz <jpiszcz@xxxxxxxxxxxxxxx>
Date: Thu, 25 Jan 2007 06:11:38 -0500 (EST)
Cc: Andrew Morton <akpm@xxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, linux-raid@xxxxxxxxxxxxxxx, xfs@xxxxxxxxxxx
In-reply-to: <45B7FB71.5030603@xxxxxxxxxxxx>
References: <Pine.LNX.4.64.0701211424170.2552@xxxxxxxxxxxxxxxx> <20070122115703.97ed54f3.akpm@xxxxxxxx> <Pine.LNX.4.64.0701241909120.2930@xxxxxxxxxxxxxxxx> <45B7FB71.5030603@xxxxxxxxxxxx>
Sender: xfs-bounce@xxxxxxxxxxx

On Thu, 25 Jan 2007, Nick Piggin wrote:

> Justin Piszcz wrote:
> > 
> > On Mon, 22 Jan 2007, Andrew Morton wrote:
> 
> > >After the oom-killing, please see if you can free up the ZONE_NORMAL memory
> > >via a few `echo 3 > /proc/sys/vm/drop_caches' commands.  See if you can
> > >work out what happened to the missing couple-of-hundred MB from
> > >ZONE_NORMAL.
> > >
> > 
> > Running with PREEMPT OFF lets me copy the file!!  The machine LAGS
> > occasionally every 5-30-60 seconds or so VERY BADLY, talking 5-10 seconds of
> > lag, but hey, it does not crash!! I will boot the older kernel with preempt
> > on and see if I can get you that information you requested.
> 
> It wouldn't be a bad idea to recompile the new kernel with preempt on
> and get the info from there.
> 
> It is usually best to be working with the most recent kernels. We can
> always backport any important fixes if we need to.
> 
> Thanks,
> Nick
> 
> -- 
> SUSE Labs, Novell Inc.
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In my tests for the most part I am using the latest kernels.

Justin.


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