[libvirt-users] Performance monotoring: Perf Event support

Hui Jing h.jingict at gmail.com
Mon Apr 24 16:54:32 UTC 2017

Hi everyone,

I am using libvirt 2.5.0. I'd like to enable the "perf events" to
monitoring my vm performance such as l3 cache. But it failed with "error:
argument unsupported: unable to enable host cpu perf event for cmt".
1. Could you please give some hints on how to check if my host CPU supports
cmt,mbm, is it displayed in /proc/cpuinfo?
2. Does the kernel version matters as well to support it?

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