I'm playing with perf in vm and getting inconsistent result. But I wonder if it's a kvm, ovirt or hardware problem.

On a ovirt's vm:

$ sudo perf list | grep Hardware | wc -l

1

$ lscpu

...

Model name:            Intel Core Processor (Haswell, no TSX)

On another ovirt's vm:

$ sudo perf list | grep Hardware | wc -l

27

$ lscpu

...

Model name:            AMD Opteron 23xx (Gen 3 Class Opteron)

On a libvirtm vm:

sudo perf list | grep Hardware | wc -l

1

lscpu

...

Model name:            Westmere E56xx/L56xx/X56xx (Nehalem-C)

...

Look's like intel CPU don't expose hardware events. Is there an option on kvm or ovirt to help that ?

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