Re: [Xen-users] poor harddisk performance HVM domain (Windows 2003guest)

["Matthijs ter Woord" <matthijsterwoord@xxxxxxxxx>]

<wishful thinking>

Would a AoE driver for windows do the job too in combination with a AoE
server xen machine?

</wishful thinking>


----- Original Message -----
From: "Joost van den Broek" <joost@xxxxxxxxxxxxx>
To: <xen-users@xxxxxxxxxxxxxxxxxxx>
Sent: Sunday, May 07, 2006 3:37 PM
Subject: Re: [Xen-users] poor harddisk performance HVM domain (Windows
2003guest)


> Hi,
>
> I'd like to see some confirmation on this one, since I'm experimenting
with
> this for days and being unable to get acceptable transfer speeds. I
thought
> such poor performance should not happen with VT?
>
> It even gets worse when installing and using Ubuntu HVM, can't enable DMA
> for the QEMU harddisk, resulting in a very slow +-3.5MB/s read. Isn't
there
> any way to resolve this?
>
>  - Joost
>
> On Thursday 4 May 2006 16:25, Joost van den Broek wrote:
> > I am now running into another problem, the networking one has been
solved
> > (thanks Dave). As I posted to my previous thread, the poor networking
> > performance is most probably caused by the harddisk. Running some
> > benchmarks gives a max of 10MB/s read throughput, while write activities
> > don't go beyond 5MB/s. The guest's write cache on the disk is enabled.
> >
> > I tried both image and physical disk partition, no difference. The CPU
> > and memory benchmarks on the other hand, are close to native. So the
> > bottleneck is definitely the (virtual) harddisk.
> >
> > Dave (and ofcourse others), what is your experience, do you have better
> > read/write results?
> >
> > - Joost
> >
> > _______________________________________________
> > Xen-users mailing list
> > Xen-users@xxxxxxxxxxxxxxxxxxx
> > http://lists.xensource.com/xen-users
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users


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