linux-kernel - Re: pdflush stuck in D state with v2.6.24-rc1-192-gef49c32

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Message-ID: <20071031035245.GQ25561@iucha.net>
Date:	Tue, 30 Oct 2007 22:52:45 -0500
From:	Florin Iucha <florin@...ha.net>
To:	Fengguang Wu <wfg@...l.ustc.edu.cn>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Trond Myklebust <trond.myklebust@....uio.no>,
	Peter Zijlstra <peterz@...radead.org>
Subject: Re: pdflush stuck in D state with v2.6.24-rc1-192-gef49c32

On Tue, Oct 30, 2007 at 07:02:42PM -0500, Florin Iucha wrote:
> I have added the patches and started a linux kernel compilation, and
> something really interesting happens.  I run the build with the
> equivalent of "make -j3" and in a separate console I am watching the
> build with 'top'.  The build consumes 98% of both CPUs.  If I stop the
> output in the build console with "Ctrl-S", one core goes to idle,
> while the other is in 50% waiting, then goes to 75% waiting.  When I
> resume the build with "Ctrl-Q", the build starts to use both CPUs at
> 98-99%.  The NFS4 use was minimal, as I did not login with Gnome, but
> just logged on the console.  Also, the CPU that is in 75% waiting
> state changes occasionally.  'Top' shows pdflush in D state, using
> 5-6% of CPU.

I forgot the traces:

   http://iucha.net/2.6.24-rc1/fw.1.gz
   http://iucha.net/2.6.24-rc1/fw.2.gz
   http://iucha.net/2.6.24-rc1/fw.3.gz

florin

-- 
Bruce Schneier expects the Spanish Inquisition.
      http://geekz.co.uk/schneierfacts/fact/163

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