Re: [Xen-users] Performance of WinXP after xen tools installed isterrible

[Itamar - IspBrasil <itamar@xxxxxxxxxxxxxxxx>]

try with only one VCPU

On 11/1/2008 7:46 AM, James Harper wrote:
> > Hi,
> >
> > The performance of Windows XP is dreadful.  Absolutely dreadful.
> > There are only two VMs on the machine, dom0 and domU.  The system
> > supports the Windows XP HVM domain through the good offices of
> > the underlying dual-core AMD cpu with AMD-V technology.
> >
> > The system spends a huge amount of time running rundll32.exe.
> > If I kill the executable, it speeds up a bit.  The performance
> > problem has been there since the beginning, and I've scanned
> > for viruses.  There are none to be found.
> >
> > I've allocated 2GIG for the domain and 2 VCPUs.  Performance
> > is so bad as to make the domain almost unusable for many
> > tasks.  Deleting files, for some reason, takes forever.
> >
> > Are there obvious things for which I can check or set?
> > I'm using the latest Citrix distro and I've installed the
> > xen-tools.iso tools.  The drivers running in the domain are
> > Hypervisor-aware.
> >
> >      
> Have you tried a complete reinstall of the DomU from scratch with no
> extra drivers or anything?
>
> Is it XP sp2? Prior to sp2 I have seen some pretty poor performance of
> XP.
>
> What does 'xm dmesg' say?
>
> What are your underlying disks in dom0?
>
> It would probably be useful to post your DomU config file to the list.
>
> James
>
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>
>    


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