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[Xen-users] Choosing best io elevator/scheduler for dom0

from [Pasi Kärkkäinen]

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Subject:	[Xen-users] Choosing best io elevator/scheduler for dom0
From:	Pasi Kärkkäinen <pasik@xxxxxx>
Date:	Thu, 23 Mar 2006 09:56:26 +0200
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Hi!

I'm trying to figure out what would be the best io elevator/scheduler for
dom0.

As far as I know, each domU virtual disk device is seen as single process in 
dom0.. correct?

Then, say, I have domU with 3 devices (sda1,sda2,sda3).. and I access all of
those 3 devices in domU.. that would make 3 processes doing io in dom0?

elevator=cfg would be a good pick to share the io load fairly? Or
elevator=deadline to minimize the io latency..

Thanks for your comments!

(btw: http://www.redhat.com/magazine/008jun05/features/schedulers/
contains db benchmark also using different elevators)

-- Pasi
       
                                   ^
                                .     .
                                 Linux
                              /    -    \
                             Choice.of.the
                           .Next.Generation.

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