linux-kernel - Re: [2.6.17.4] slabinfo.buffer

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Message-ID: <Pine.LNX.4.63.0609061341150.1700@pcgl.dsa-ac.de>
Date:	Wed, 6 Sep 2006 13:48:01 +0200 (CEST)
From:	Guennadi Liakhovetski <gl@...-ac.de>
To:	linux-kernel@...r.kernel.org
Subject: Re: [2.6.17.4] slabinfo.buffer_head increases

> On Mon, 10 Jul 2006, Guennadi Liakhovetski wrote:
>
>> I am obsering a steadily increasing buffer_head value in slabinfo under
>> 2.6.17.4. I searched the net / archives and didn't find anything
>> directly relevant. Does anyone have an idea or how shall we debug it?

The problem is still there under 2.6.18-rc2. I narrowed it down to ext3 
journal. To reproduce one just has to mount an ext3 partition and perform 
(write) accesses to it. A loop { touch /mnt/foo; sleep 1; } suffices - 
just let it run for a couple of minutes and monitor buffer_head in 
/proc/slabinfo. If you mount it as ext2 the problem is gone.

Thanks
Guennadi
---------------------------------
Guennadi Liakhovetski, Ph.D.
DSA Daten- und Systemtechnik GmbH
Pascalstr. 28
D-52076 Aachen
Germany
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