Message-ID: <4DC31EDE.2020503@gmx.de>
Date: Fri, 06 May 2011 00:04:14 +0200
From: Thomas Sattler <tsattler@gmx.de>
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To: Andrea Arcangeli <aarcange@redhat.com>
CC: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: iotop: khugepaged at 99.99% (2.6.38.X)
References: <4DAF6C0B.3070009@gmx.de> <20110427134613.GI32590@random.random> <4DC14474.9040001@gmx.de> <20110504143842.GK7838@random.random>
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It happened again: This time with 2.6.38.4 after 13 days uptime.
In fact it was "13 days after last boot", since this machine is
hibernated quite often. I waited only two minutes before I run
'reboot' as root.

> Please next time can you run SYSRQ+t too in addition of SYSRQ+l?

See http://pastebin.com/raw.php?i=XnXXfC40 (It seems to me SYSRQ+l
did not work at all? And does also not work on 2.6.38.5?)

see http://pastebin.com/raw.php?i=Zuv0VnUP for 'top/iotop'

> You can run also a "ps xal" to see the actual scheduler task
> state.

I had no access to my mails and forgot to run 'ps xal'. :-(

> If we understand what it is, it'll be easy to tell if it was already
> fixed in 2.6.38.4 but I doubt unless it's not related to MM.

Definitely not fixed in 2.6.38.4.

Thomas

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