Re: [Xen-devel] Virtualization of the CPU Performance Monitoring Unit

[Lin Ming <mlin@xxxxxxxxxxxxx>]

On Sat, Apr 7, 2012 at 2:36 AM, Konrad Rzeszutek Wilk
<konrad.wilk@xxxxxxxxxx> wrote:
> On Fri, Apr 06, 2012 at 11:43:00AM -0500, Wei Huang wrote:
>> On 04/06/2012 10:41 AM, Lin Ming wrote:
>> >Hi list,
>> >
>> >Is anybody working on virtualization of the CPU Performance Monitoring Unit?
>> >
>> >There are 2 PMU related projects listed on GSoC 2012 page.
>> >http://wiki.xen.org/wiki/Archived/GSoC_2012_Ideas
>> >
>> >- Virtualization of the CPU Performance Monitoring Unit
>> >- Perf support for Xen
>> >
>> >I'm interested on these 2 projects.
>> Hi Lin,
>>
>> 1. I don't think Xen was accepted as an organization for 2012 GSOC.
>> See
>> http://lists.xen.org/archives/html/xen-devel/2012-03/msg02080.html.
>> 2. The PMU project description in the wiki is vague. I know HVM
>> guests support virtualized PMU. Please check vpmu.c files in /hvm,
>> /svm, and /vmx directories. You better ask mentors for details
>> (maybe this is XCP specific?).
>
> This is dom0 related. So being able to use perf to instrument
> the hypervisor (and the guests from dom0).

For guests instrument:

How about use perf on guests(domU) directly?

Thanks,
Lin Ming

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