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Date: Tue, 23 Mar 2010 11:10:08 -0300
From: Arnaldo Carvalho de Melo <acme@infradead.org>
To: Andi Kleen <andi@firstfloor.org>
Cc: Soeren Sandmann <sandmann@daimi.au.dk>, Joerg Roedel <joro@8bytes.org>,
       Ingo Molnar <mingo@elte.hu>,
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       Zachary Amsden <zamsden@redhat.com>, zhiteng.huang@intel.com,
       Fr??d??ric Weisbecker <fweisbec@gmail.com>
Subject: Re: [PATCH] Enhance perf to collect KVM guest os statistics from
	host side
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Em Tue, Mar 23, 2010 at 02:49:01PM +0100, Andi Kleen escreveu:
> Soeren Sandmann <sandmann@daimi.au.dk> writes:
> > To fix that problem, it seems like we need some way to have python
> > export what is going on. Maybe the same mechanism could be used to
> > both access what is going on in qemu and python.
> 
> oprofile already has an interface to let JITs export
> information about the JITed code. C Python is not a JIT,
> but presumably one of the python JITs could do it.
> 
> http://oprofile.sourceforge.net/doc/devel/index.html
> 
> I know it's not envogue anymore and you won't be a approved 
> cool kid if you do, but you could just use oprofile? 

perf also has supports for this and Pekka Enberg's jato uses it:

http://penberg.blogspot.com/2009/06/jato-has-profiler.html

- Arnaldo