Re: [Xen-users] HVM Cpu performance 3.2 - Windows XP

["Oliver Wilcock" <oliver@xxxxxxx>]

I revisited this and found that a Windows Server 2003 R2 HVM is fine with
ACPI and APIC.  Perhaps it is Windows XP that triggers the problem.

So far we have:
1. AMD CPU
2. kernel 2.6.16?  32 or 64 bit
3. Xen 3.2
4. guest is 32 bit Windows XP Pro SP2 HVM using ACPI HAL or APIC HAL.


> On Tue, Dec 09, 2008 at 03:44:12PM -0700, Nick Couchman wrote:
>> Here's my working configuration:
>> 1) Intel Xeon E5335
>> 2) SLES 10 SP2 64-bit (2.6.16.60)
>> 3) Xen 3.2.0 (build included with SLES10 SP2)
>> 4) 32-bit Windows HVM using APIC HALs
>>
>> I have ~15 Windows HVM domUs running with absolutely no performance
>> issues, plus several PV domUs.
>>
>
> Hello.
>
> Might be a good idea to post your configuration file for those (working)
> windows hvm domains.. just so that people can verify all the settings.
>
> -- Pasi
>
>
>> -Nick
>>
>>
>>
>>
>> -----Original Message-----
>> From: Oliver Wilcock <oliver@xxxxxxx>
>> To: Xen-users@xxxxxxxxxxxxxxxxxxx
>> Subject: RE: [Xen-users] HVM Cpu performance 3.2
>> Date: Tue, 9 Dec 2008 14:50:37 -0500 (EST)
>>
>>
>> So far we have:
>> 1. AMD CPU
>> 2. kernel 2.6.16?  32 or 64 bit
>> 3. Xen 3.2
>> 4. guest is 32 bit Windows HVM using ACPI HAL or APIC HAL.
>>
>> Result: unusable performance for Windows HVM.
>>
>> Anyone out there using the above combination without problems?
>>
>> > Ours is
>> >
>> > 1. AMD CPU
>> > 2. 32 Bit Hypervisor
>> > 3. Debian Etch Dom 0
>> > 4. Xen 3.2
>> > 5. guest is 32 bit Windows HVM using ACPI
>> >
>> >
>> >
>> >
>> > -----Original Message-----
>> > From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
>> > [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Oliver
>> > Wilcock
>> > Sent: 09 December 2008 14:07
>> > To: xen-users@xxxxxxxxxxxxxxxxxxx
>> > Subject: RE: [Xen-users] HVM Cpu performance 3.2
>> >
>> >> Yes thats correct.
>> >> The windows dom Us are using between 30-80% usage in xm top and the
>> > host
>> >> itself is running slow.
>> >> Ill have a look at your recommend searches
>> >> Thanks for your help
>> >> Ian
>> >>
>> > Excellent, another person with what might be the same problem.
>> >
>> > I would like to know what the minimum set of common factors are.  I'm
>> > starting with this list:
>> > 1. AMD CPU
>> > 2. 64 bit hypervisor / Dom0?  SLES10 SP2, for me.
>> > 3. Xen 3.2
>> > 4. guest is 32 bit Windows HVM using ACPI HAL or APIC HAL.
>>
>>
>>
>


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