disk performance strange/low

[Christoph Hellwig]

On Tue, Aug 18, 2009 at 04:08:05AM +0200, Michael Monnerie wrote:
> On Montag 17 August 2009 Christoph Hellwig wrote:
> > Yes, that sounds like the problem of the VM not feeding us enough
> > pages to write. ?What kernel is this on? ?Latest 2.6.31-rc has a
> > workaround for it.
> 
> 2.6.27.23-0.1-xen from openSUSE 11.1
> I can't switch as I use it with the free Xen. Thanks for the info.

Try backporting commit c8a4051c3731b6db224482218cfd535ab9393ff8 from
mainline - it should apply just fine to a 2.6.27-ish kernel.