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

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Message-Id: <20081209.031120.90683825.davem@davemloft.net>
Date:	Tue, 09 Dec 2008 03:11:20 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	mingo@...e.hu
Cc:	eranian@...il.com, linux-kernel@...r.kernel.org,
	tglx@...utronix.de, linux-arch@...r.kernel.org,
	akpm@...ux-foundation.org, dada1@...mosbay.com,
	robert.richter@....com, arjan@...radead.org, hpa@...or.com,
	a.p.zijlstra@...llo.nl, rostedt@...dmis.org, paulus@...ba.org
Subject: Re: [patch] Performance Counters for Linux, v2

From: Ingo Molnar <mingo@...e.hu>
Date: Tue, 9 Dec 2008 12:02:46 +0100

> 
> * stephane eranian <eranian@...glemail.com> wrote:
> 
> > > There's also more generic x86 support: all 4 generic PMCs of Nehalem 
> > > / Core i7 are supported - i've run 4 instances of KernelTop and they 
> > > used up four separate PMCs.
> >
> > Core/Atom have 5 counters, Nehalem has 7. Why are you not using all of 
> > them already?
> 
> no, Nehalem has 4 generic purpose PMCs and 3 fixed-purpose PMCs (7 
> total),
 ...
> Saying that it has 7 is misleading.

Even you just did.
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