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Date: Mon, 13 Jun 2011 12:28:37 +0200
Message-ID: <BANLkTi=puXde+bq9PD9foGT35oNU+Vag1A@mail.gmail.com>
Subject: Re: iotop: khugepaged at 99.99% (2.6.38.3)
From: Antonio Messina <arcimboldo@gmail.com>
To: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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On Thu, Apr 21, 2011 at 1:28 AM, Thomas Sattler <tsattler@gmx.de> wrote:
> Hi there ...
>
> While running firefox (>50 open Tabs), khugepaged jumped to 99.99%
> (according to 'iotop'). ?I killed firefox and nearly all running
> programs but khugepaged was still at 99.99% IO while the system
> was almost idle. I waited about 10 minutes, no improvement, so
> I rebooted the machine.

Dear all,

I have a similar issue, but I am running a 2.6.38-6 kernel on a HPC
cluster, and I had this issue quite often lately, especially on jobs
accessing the network (but since we are using NFS and MPI, many jobs
are actually accessing the network).

I'm using an SMP, non-PREEMPT kernel (2cpu*8 cores each machine). I
can provide you more information if you need, but please reply to me
since I'm not subscribed to the mailing list.

.a.
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