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Re: 2.6.39-rc4+: oom-killer busy killing tasks

To: Christian Kujau <lists@xxxxxxxxxxxxxxx>
Subject: Re: 2.6.39-rc4+: oom-killer busy killing tasks
From: Dave Chinner <david@xxxxxxxxxxxxx>
Date: Thu, 5 May 2011 09:15:49 +1000
Cc: Markus Trippelsdorf <markus@xxxxxxxxxxxxxxx>, LKML <linux-kernel@xxxxxxxxxxxxxxx>, xfs@xxxxxxxxxxx, minchan.kim@xxxxxxxxx
In-reply-to: <alpine.DEB.2.01.1105041205340.18728@xxxxxxxxxxxxxx>
References: <20110501080149.GD13542@dastard> <alpine.DEB.2.01.1105012135260.18728@xxxxxxxxxxxxxx> <20110502121958.GA2978@dastard> <alpine.DEB.2.01.1105021247410.18728@xxxxxxxxxxxxxx> <20110503005114.GE2978@dastard> <alpine.DEB.2.01.1105031345090.18728@xxxxxxxxxxxxxx> <alpine.DEB.2.01.1105031740460.18728@xxxxxxxxxxxxxx> <20110504073615.GD9114@dastard> <20110504111211.GF9114@dastard> <alpine.DEB.2.01.1105041205340.18728@xxxxxxxxxxxxxx>
User-agent: Mutt/1.5.20 (2009-06-14)
On Wed, May 04, 2011 at 12:10:04PM -0700, Christian Kujau wrote:
> On Wed, 4 May 2011 at 21:12, Dave Chinner wrote:
> >> Ok, that will be helpful. Also helpful is that I've (FINALLY!)
> >> reproduced this myself, and i think i can now reproduce it at will
> >> on a highmem i686 machine. I'll look into it more later tonight....
> 
> I've tried to reproduce it on an SMP i686 with 1024MB RAM, but there was 
> no OOM there.
> 
> > And here's a patch for you to try. It fixes the problem on my test
> > machine.....
> 
> Excellent! After one run with that patch, the machine does not go OOM any 
> more when running du(1) over this XFS filesystem.

Ok, That is good to know that we are seeing the same problem ;)

I'll push the fix through the XFS tree to mainline. Thanks for all
your effort helping me understand and debug the problem, Christian.

Cheers,

Dave.
-- 
Dave Chinner
david@xxxxxxxxxxxxx

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