linux-ext4 - Re: ext4_alloc_context occupies 150 GiB of memory and makes the system unusable

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Message-ID: <loom.20110315T113622-714@post.gmane.org>
Date:	Tue, 15 Mar 2011 10:41:06 +0000 (UTC)
From:	Sven <hartrumpf@....net>
To:	linux-ext4@...r.kernel.org
Subject: Re: ext4_alloc_context occupies 150 GiB of memory and makes the system unusable

Ted Ts'o writes:

> Christoph,
> 
> Have you been able to replicate this problem since rebooting your
> machine.  I've never seen anything quite like your report before.

I have a similar problem here: 2.5 GB of 6 GB used by ext4_allocation_context
according to slabtop.

# uname -a
Linux ... 2.6.34.7-0.7-default #1 SMP 2010-12-13 11:13:53 +0100 x86_64 x86_64
x86_64 GNU/Linux

openSUSE 11.3

> If you do, a couple of questions.  Which slab allocator are you using?
> Are you using SLAB or SLUB?  (grep for CONFIG_SLAB or CONFIG_SLUB in
> your .config file).

It seems to be SLAB, so I cannot use slabinfo:
# slabinfo -r
SYSFS support for SLUB not active

Any solutions found in the past 3 months? 


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