Some Xen performance data related to the xen-acpi-processor patchset

[Andy Whitcroft]

On Wed, May 16, 2012 at 05:05:12PM +0200, Stefan Bader wrote:
> We got a request[1] to backport some patches which will disable the usual
> frequency scaling drivers and add a new xen specific one that will make
> callbacks into the hypervisor to enable p-state control (the hypervisor
> has no acpi table parser but needs to make those decisions).
> 
> I have been playing with the proposed patches[2] on an Intel i7 and one AMD
> Opteron 6128 based system. And finally I also got around to write some CPU
> intensive test (adding numbers in a loop for each visible VCPU) that gathers the
> runtime statistics.

These fixes are all already in Quantal and enabled by default.  So any
testing we do there helps to validate them also.

[...]

-apw
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 836 bytes
Desc: Digital signature
URL: <https://lists.ubuntu.com/archives/kernel-team/attachments/20120516/d655af6c/attachment.sig>