linux-kernel - Re: [patch] Performance Counters for Linux, v4

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Message-ID: <18760.8982.774791.448768@cargo.ozlabs.ibm.com>
Date:	Wed, 17 Dec 2008 08:52:22 +1100
From:	Paul Mackerras <paulus@...ba.org>
To:	Vince Weaver <vince@...ter.net>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Stephane Eranian <eranian@...glemail.com>,
	Eric Dumazet <dada1@...mosbay.com>,
	Robert Richter <robert.richter@....com>,
	Arjan van de Ven <arjan@...radead.org>,
	Peter Anvin <hpa@...or.com>,
	"David S. Miller" <davem@...emloft.net>,
	perfctr-devel@...ts.sourceforge.net
Subject: Re: [patch] Performance Counters for Linux, v4

Vince Weaver writes:
> 
> > On Tue, 2008-12-16 at 08:42 +1100, Paul Mackerras wrote:
> > Furthermore, I think output of tools such as time and now timec are most
> > relevant when compared between runs - that is, the change in values
> > between runs, not the absolute values as such. At least, that's what I
> > usually do:

Just for the record, I didn't write the quoted paragraph, Peter
Zijlstra did.

Paul.
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