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Re: [Xen-users] disk backend performance

To: Stefan de Konink <stefan@xxxxxxxxx>
Subject: Re: [Xen-users] disk backend performance
From: Thomas Halinka <lists@xxxxxxxxx>
Date: Fri, 28 Nov 2008 14:16:59 +0100
Cc: Xen Users <xen-users@xxxxxxxxxxxxxxxxxxx>, Guillaume <guillaume.chardin@xxxxxxxxx>
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Am Freitag, den 28.11.2008, 10:54 +0100 schrieb Stefan de Konink:
> On Fri, 28 Nov 2008, Guillaume wrote:
> > I ask me some questions about xen disk backend performance. What is the
> > better backend to use to have the best ones.
> >
> > For me I tought its better to use phy: than disk: , because it's does'nt
> > need "encapsulation" to store data in and so, writing data is quicker. But
> > maybe i'm wrong.
> > Maybe some of you can give advise and more info about that !
> iSCSI + pvSCSI seems to be optimal I guess.

iSCSI is pretty slow, because of all the tcp-ip overhead. Try AoE since
its Layer 2 (Ethernet)

> Stefan


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