* [xen-devel] Xen PMU support
@ 2013-03-20 11:44 李春奇 <Arthur Chunqi Li>
2013-03-20 12:05 ` Dietmar Hahn
2013-03-20 12:06 ` George Dunlap
0 siblings, 2 replies; 3+ messages in thread
From: 李春奇 <Arthur Chunqi Li> @ 2013-03-20 11:44 UTC (permalink / raw)
To: xen-devel
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Hi all,
I want to know if PMU in Xen HVM or PV is supported now? I have done a test
that in the latest xen-unstable source, "perf" command cannot give right
output in VMs. My CPU is Intel(R) Xeon(R) CPU E5620 @ 2.40GHz.
Thanks,
Arthur
--
Arthur Chunqi Li
Department of Computer Science
School of EECS
Peking University
Beijing, China
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* Re: [xen-devel] Xen PMU support
2013-03-20 11:44 [xen-devel] Xen PMU support 李春奇 <Arthur Chunqi Li>
@ 2013-03-20 12:05 ` Dietmar Hahn
2013-03-20 12:06 ` George Dunlap
1 sibling, 0 replies; 3+ messages in thread
From: Dietmar Hahn @ 2013-03-20 12:05 UTC (permalink / raw)
To: xen-devel; +Cc: 李春奇 <Arthur Chunqi Li>
Am Mittwoch 20 März 2013, 19:44:27 schrieb æŽæ˜¥å¥‡:
> Hi all,
> I want to know if PMU in Xen HVM or PV is supported now? I have done a test
> that in the latest xen-unstable source, "perf" command cannot give right
> output in VMs. My CPU is Intel(R) Xeon(R) CPU E5620 @ 2.40GHz.
perf should be supported for HVM guests in the last xen-unstable source for
most Intel processors.
You have to add the 'vpmu' flag as hypervisor boot parameter. If you start
your HVM guest you should see a message in the hypervisor logs if your cpu
is not supported.
Dietmar.
>
> Thanks,
> Arthur
>
>
--
Company details: http://ts.fujitsu.com/imprint.html
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [xen-devel] Xen PMU support
2013-03-20 11:44 [xen-devel] Xen PMU support 李春奇 <Arthur Chunqi Li>
2013-03-20 12:05 ` Dietmar Hahn
@ 2013-03-20 12:06 ` George Dunlap
1 sibling, 0 replies; 3+ messages in thread
From: George Dunlap @ 2013-03-20 12:06 UTC (permalink / raw)
To: 李春奇; +Cc: xen-devel@lists.xensource.com
On Wed, Mar 20, 2013 at 11:44 AM, 李春奇 <Arthur Chunqi Li>
<yzt356@gmail.com> wrote:
> Hi all,
> I want to know if PMU in Xen HVM or PV is supported now? I have done a test
> that in the latest xen-unstable source, "perf" command cannot give right
> output in VMs. My CPU is Intel(R) Xeon(R) CPU E5620 @ 2.40GHz.
Googling for "xen vpmu" turns up this page, which has some basics:
http://wiki.xen.org/wiki/Xen_Profiling:_oprofile_and_perf
Strangely though, googling for "Xen PMU" doesn't seem to be as
useful... maybe we need to add some more tags. :-)
-George
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2013-03-20 11:44 [xen-devel] Xen PMU support 李春奇 <Arthur Chunqi Li>
2013-03-20 12:05 ` Dietmar Hahn
2013-03-20 12:06 ` George Dunlap
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