Re: [PATCH] Enhance perf to collect KVM guest os statistics from host side

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Hi -

On Tue, Mar 16, 2010 at 06:04:10PM -0500, Anthony Liguori wrote:
> [...]
> The only way to really address this is to change the interaction.  
> Instead of running perf externally to qemu, we should support a perf 
> command in the qemu monitor that can then tie directly to the perf 
> tooling.  That gives us the best possible user experience.

To what extent could this be solved with less crossing of
isolation/abstraction layers, if the perfctr facilities were properly
virtualized?  That way guests could run perf goo internally.
Optionally virt tools on the host side could aggregate data from
cooperating self-monitoring guests.

- FChE
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