linux-kernel - Re: [patch] Performance Counters for Linux, v2

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Message-ID: <18751.18735.539555.111549@drongo.ozlabs.ibm.com>
Date:	Wed, 10 Dec 2008 15:44:31 +1100
From:	Paul Mackerras <paulus@...ba.org>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	Ingo Molnar <mingo@...e.hu>, eranian@...il.com,
	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	linux-arch@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Eric Dumazet <dada1@...mosbay.com>,
	Robert Richter <robert.richter@....com>,
	Arjan van de Veen <arjan@...radead.org>,
	Peter Anvin <hpa@...or.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Steven Rostedt <rostedt@...dmis.org>,
	David Miller <davem@...emloft.net>,
	Paolo Ciarrocchi <paolo.ciarrocchi@...il.com>
Subject: Re: [patch] Performance Counters for Linux, v2

Andi Kleen writes:

> When you say counting you should also include "event ring buffers with
> metadata", like PEBS on Intel x86. 

I'm not familiar with PEBS.  Maybe it's something different again,
neither sampling nor counting, but a third thing?

Paul.
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