linux-kernel - Re: performance counter 20% error finding retired instruction count

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Message-Id: <1245912600.31755.21.camel@twins>
Date:	Thu, 25 Jun 2009 08:50:00 +0200
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Vince Weaver <vince@...ter.net>
Cc:	Ingo Molnar <mingo@...e.hu>, Paul Mackerras <paulus@...ba.org>,
	linux-kernel@...r.kernel.org
Subject: Re: performance counter 20% error finding retired instruction count

On Wed, 2009-06-24 at 22:12 -0400, Vince Weaver wrote:
> 
> It's also nice to be able to skip the loader overhead, as the loader can 
> change from system to system and makes it hard to compare counters across 
> various machines.  Though it sounds like the perf utility isn't going to 
> be supporting this anytime soon.

Feel free to contribute such if you think its important.

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