From: Ingo Molnar <mingo@elte.hu>
To: sebastien cabaniols <sebastien.cabaniols@hp.com>
Cc: linux-kernel@vger.kernel.org, Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: performance counter for linux question.
Date: Sat, 19 Sep 2009 10:01:14 +0200 [thread overview]
Message-ID: <20090919080114.GA7676@elte.hu> (raw)
In-Reply-To: <200909171428.23610.sebastien.cabaniols@hp.com>
* sebastien cabaniols <sebastien.cabaniols@hp.com> wrote:
> Hello list,
>
> I am interested by monitoring instructions versus cycles with a Nehalem box
> using 2.6.31 with PCL.
>
> Is there a way with perf report to display both counters ?
>
> I used
>
> perf record -e cycles -e instructions -a for the recording session.
>
> perf report -n seems to be doing what I need but for only one counter.
>
> Is this a limitation of perf report ?
> Is this an architectural limitation of PCL ?
> Is there more documentation than what is in the perf directory in the 2.6.31
> tarball ?
You can find a description and a tutorial here:
http://lwn.net/Articles/339361/
There's also http://perf.wiki.kernel.org.
Ingo
prev parent reply other threads:[~2009-09-19 8:01 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-17 12:28 performance counter for linux question sebastien cabaniols
2009-09-19 8:01 ` Ingo Molnar [this message]
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