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

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Message-Id: <E1ImpbK-0000l3-1u@localhost>
Date:	Tue, 30 Oct 2007 19:49:41 +0800
From:	Fengguang Wu <wfg@...l.ustc.edu.cn>
To:	Florin Iucha <florin@...ha.net>
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 06:42:50AM -0500, Florin Iucha wrote:
> On Tue, Oct 30, 2007 at 03:54:03PM +0800, Fengguang Wu wrote:
> > It could be triggered by the more aggressive writeback behavior - the
> > new code will keep on retrying as long as there are dirty inodes pending.
> > 
> > Florin, would you try the attached patches against 2.6.24-git?
> > They may generate big traffic of printk messages, but will help
> > debug the problem.
> 
> I have updated to v2.6.24-rc1-334-g82798a1.  After using my computer
> for two hours, I left the computer idle overnight.  This morning,
> pdflushd is again consuming 25% of a CPU.  I will try Fengguang's
> patches today.

Thank you.

Be sure to stop klogd ;-)
A `dmesg` will be sufficient for debugging.

btw, I cannot reproduce it with simple NFSv3 tests.

Fengguang

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