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?
Thanks for your help,
Binh
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