linux-ext4 - Re: [BUG] fatal hang untarring 90GB file, possibly writeback related.

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Message-ID: <20110506080728.GC6591@suse.de>
Date:	Fri, 6 May 2011 09:07:28 +0100
From:	Mel Gorman <mgorman@...e.de>
To:	James Bottomley <James.Bottomley@...e.de>
Cc:	Mel Gorman <mgorman@...ell.com>, Jan Kara <jack@...e.cz>,
	colin.king@...onical.com, Chris Mason <chris.mason@...cle.com>,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>,
	linux-mm <linux-mm@...ck.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-ext4 <linux-ext4@...r.kernel.org>
Subject: Re: [BUG] fatal hang untarring 90GB file, possibly writeback related.

On Fri, May 06, 2011 at 08:42:24AM +0100, Mel Gorman wrote:
> 1. High-order allocations? You machine is using i915 and RPC, something
>    neither of my test machine uses. i915 is potentially a source for
>    high-order allocations. I'm attaching a perl script. Please run it as
>    ./watch-highorder.pl --output /tmp/highorders.txt
>    while you are running tar. When kswapd is running for about 30
>    seconds, interrupt it with ctrl+c twice in quick succession and
>    post /tmp/highorders.txt
> 

Attached this time :/

-- 
Mel Gorman
SUSE Labs

Download attachment "watch-highorder.pl" of type "application/x-perl" (7011 bytes)