linux-kernel - Re: disabling group leader perf

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Date:	Mon, 06 Sep 2010 15:49:31 +0300
From:	Avi Kivity <avi@...hat.com>
To:	Peter Zijlstra <peterz@...radead.org>
CC:	linux-perf-users@...r.kernel.org,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: disabling group leader perf_event

  On 09/06/2010 03:29 PM, Peter Zijlstra wrote:
>
>>> So what you're basically trying to do is create some histogram of
>>> exit_reason?
>> Yes, exactly.
> One thing I thought of, you can use the unfiltered kvm_exit event as
> leader, that will give you the total number of events, which, esp. when
> you create partial histograms, is useful to figure out how much you
> missed.

Yeah - and the aggregate kvm_exit count is the single most important 
metric for kvm.  We do count it regardless of whether we want the 
individual exit_reasons or not.

-- 
error compiling committee.c: too many arguments to function

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