linux-kernel - Re: Strange write starvation on 2.6.17 (and other) kernels

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Message-ID: <44EEB8EF.5050505@agh.edu.pl>
Date:	Fri, 25 Aug 2006 10:46:39 +0200
From:	Andrzej Szymanski <szymans@....edu.pl>
To:	Neil Brown <neilb@...e.de>
Cc:	Miquel van Smoorenburg <miquels@...tron.nl>,
	linux-kernel@...r.kernel.org
Subject: Re: Strange write starvation on 2.6.17 (and other) kernels

Neil Brown wrote:
> On Tuesday August 22, neilb@...e.de wrote:
>> In my various experimenting the one thing that was effective in
>> improving the fairness was to make Linux impose write throttling more
>> often.
> 
> I might have found something else too....
> 
> Were you using ext3?
> 
> If you, can you try mounting with  data=writeback
> and see if that makes any difference to the fairness?
> 
> Thanks,
> NeilBrown

I've already tried data=writeback - almost no difference or it makes 
things even worse. I've briefly tested XFS filesystem, and I've seen the 
same behavior as in ext3 so it does not seem to be ext3 related.

Andrzej.
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