This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
Home Products Support Community News


Re: [Xen-users] Getting Windows 2003 to run in multiple cores ???

On Tue, Aug 4, 2009 at 3:34 PM, Madhu Venugopal
(vmadhu)<vmadhu@xxxxxxxxx> wrote:
> My configuration file has explicit acpi=1 & apic=1.
> But during installation I remember following a step which suggested
> setting these values to 0.

It was a suggested setting a long time. Last time I check though, it
was the number of cpus that matter. One vcpu would yield better I/O
throughput (whether the HAL is standard or ACPI) compared to two
vcpus. This was with 0.9.x GPLPV series though, so current performance
might have improved.

> Maybe that is the root-cause of the issue
> that am seeing now.

Somewhat. Standard PC HAL can only use 1 cpu/core. You need to change
the HAL to ACPI first.

> Will try to look for the info to switch to a different HAL.
> In the meantime it would be great if you can point me to any
> solid/proven
> documentation to do the same .

I've been able to use multiple CPUs but not multiple core. Let us know
if you got it working.


Xen-users mailing list