Access to CPU's Performance Counters (PMU)

News, Blogs and Resources on the Linux (KVM) Kernel-Based Virtual Machine

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March 21, 2012 - 6:17am

nudgegoonies

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Joined: Mar 21 2012

Points: 3

Hi there,
i have to do performance analysis of virtual machines an i need access to the CPU performance counters from inside of a VM.

Is it possible to download this rejected patch http://lwn.net/Articles/379869/ and patch it in on Scientific Linux 5 or 6?

This patch seems to do exactly what i want. I know there is a KVM virtual PMU from kernel 3.3 on but there is no software!

Is there a special solution, like xenprofile available for KVM? I google since hours to find a way to read these counters.
Regards,
Andreas

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