Hi Gleb,
Thanks for the suggestion, but I just tried to specify the cpu type to
QEMU: -cpu host and I got the same output.
Binh
On 11/13/2013 12:54 PM, Gleb Natapov wrote:
On Wed, Nov 13, 2013 at 11:52:01AM -0500, Binh Q. Pham wrote:
Hi all,
I just started using kvm and want to use linux 'perf' tool inside
the virtual machine to get some information about the hardware
performance counters. I noticed in kvm source, there is pmu.c and
pmu-stubs.c, so I assume they provide support for PMU. However, when
I ran 'perf stat' in the VM, all hardware events are not supported.
Sample screen shot:
perf stat /bin/ls
Performance counter stats for '/bin/ls':
<not supported> cycles
<not supported> stalled-cycles-frontend
....
Could someone clarify for me if I can use 'perf' in VM with the
current kvm state?
You need to specify host cpu type to QEMU: -cpu host.
--
Gleb.
--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
