On Tue, Oct 6, 2015 at 6:50 PM, David Matlack wrote:
> Have you tried perf kvm stat? e.g.
>
> perf kvm stat record -a sleep 10 # record all vmexits for 10 seconds
> perf kvm stat report --event=vmexit
>
> This gives per-exit counts and min/max/avg latencies.
>
> Alternatively you can record the ra
Have you tried perf kvm stat? e.g.
perf kvm stat record -a sleep 10 # record all vmexits for 10 seconds
perf kvm stat report --event=vmexit
This gives per-exit counts and min/max/avg latencies.
Alternatively you can record the raw events kvm:kvm_exit and kvm:kvm_entry and
process the data howeve
Hello all,
There used to be perf scripts to do exit-level profiling of VMs
(number of exits, time spent per exit, etc). I am using kernel version
3.19, and the perf utility which ships with it has a perf-kvm option, but
that only reports total number of exits, and not the reason/latency.