From: Eric Sandeen <sandeen@redhat.com>
To: Christoph Bartoschek <bartoschek@or.uni-bonn.de>
Cc: linux-ext4@vger.kernel.org
Subject: Re: ext4_alloc_context occupies 150 GiB of memory and makes the system unusable
Date: Mon, 22 Nov 2010 09:45:51 -0600 [thread overview]
Message-ID: <4CEA902F.9040706@redhat.com> (raw)
In-Reply-To: <201011221637.58275.bartoschek@or.uni-bonn.de>
On 11/22/10 9:37 AM, Christoph Bartoschek wrote:
...
> I see the problem for the first time and I do not know whether it is
> reproducable. We have several similar machines with similar workloads but none
> has shown such a problem till now.
>
> I'm going to reboot the machine. If it shows the problem again I will try a
> newer kernel and then the patch.
>
> Some workload will be lost, but the machine did not do anything useful for
> three days now :)
at some point somebody needs to look at the slab cache management, I think;
even if ext4 is (ab)using this cache, having that much memory unreclaimable
in inactive caches is clearly a bug somewhere...!
-Eric
next prev parent reply other threads:[~2010-11-22 15:45 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-22 12:23 ext4_alloc_context occupies 150 GiB of memory and makes the system unusable Christoph Bartoschek
2010-11-22 15:24 ` Eric Sandeen
2010-11-22 15:37 ` Christoph Bartoschek
2010-11-22 15:45 ` Eric Sandeen [this message]
2010-12-05 3:11 ` Ted Ts'o
2011-03-15 10:41 ` Sven
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