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Re: pdflush not flushing all dirty_expire_centisecs

To: Alexander Bergolth <leo@xxxxxxxxxxxxxxxxxxxx>
Subject: Re: pdflush not flushing all dirty_expire_centisecs
From: David Chinner <dgc@xxxxxxx>
Date: Mon, 20 Mar 2006 11:24:19 +1100
Cc: Linux xfs mailing list <linux-xfs@xxxxxxxxxxx>
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On Fri, Mar 17, 2006 at 04:06:44PM +0100, Alexander Bergolth wrote:
> Hi!
> 
> On my FC3 systems, I'm experiencing the problem that dirty buffers are
> not periodically flushed under certain conditions.

I don't think this is an XFS problem. Dirty page flushing is broken
generically in certain ways.  For example:

http://marc.theaimsgroup.com/?l=linux-kernel&m=113919849421679&w=2

> I don't think that the problem is XFS-specific as it does also happen on
> boxes with ext3 filesystems but maybe anyone has a hint...

I'd start by upgrading to the latest stable kernel, and if the problem
still exists, reporting it to LKML.

Cheers,

Dave.
-- 
Dave Chinner
R&D Software Enginner
SGI Australian Software Group


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