From: Andi Kleen <andi@firstfloor.org>
To: Paul Mackerras <paulus@samba.org>
Cc: Andi Kleen <andi@firstfloor.org>, Ingo Molnar <mingo@elte.hu>,
eranian@gmail.com, linux-kernel@vger.kernel.org,
Thomas Gleixner <tglx@linutronix.de>,
linux-arch@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
Eric Dumazet <dada1@cosmosbay.com>,
Robert Richter <robert.richter@amd.com>,
Arjan van de Veen <arjan@infradead.org>,
Peter Anvin <hpa@zytor.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Steven Rostedt <rostedt@goodmis.org>,
David Miller <davem@davemloft.net>,
Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Subject: Re: [patch] Performance Counters for Linux, v2
Date: Wed, 10 Dec 2008 11:26:20 +0100 [thread overview]
Message-ID: <20081210102620.GE23556@one.firstfloor.org> (raw)
In-Reply-To: <18751.18735.539555.111549@drongo.ozlabs.ibm.com>
On Wed, Dec 10, 2008 at 03:44:31PM +1100, Paul Mackerras wrote:
> 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?
Yes it's a third thing. A CPU controlled ring event buffer. See Stephane's
description.
There's also some crosses, e.g. AMD's IBS (which is essentially a counter +
some additional registers to give more details about the interrupted
instruction)
-Andi
--
ak@linux.intel.com
prev parent reply other threads:[~2008-12-10 10:14 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-08 1:22 [patch] Performance Counters for Linux, v2 Ingo Molnar
2008-12-08 1:49 ` Arjan van de Ven
2008-12-08 11:49 ` Ingo Molnar
2009-01-07 7:43 ` Zhang, Yanmin
2009-01-09 1:07 ` Zhang, Yanmin
2008-12-08 3:24 ` Paul Mackerras
2008-12-08 11:33 ` Ingo Molnar
2008-12-08 12:02 ` David Miller
2008-12-08 14:41 ` Andi Kleen
2008-12-08 22:03 ` Paul Mackerras
2008-12-09 13:00 ` Ingo Molnar
2008-12-09 23:00 ` Paul Mackerras
2008-12-08 8:32 ` Corey J Ashford
2008-12-09 6:37 ` stephane eranian
2008-12-09 11:02 ` Ingo Molnar
2008-12-09 11:11 ` David Miller
2008-12-09 11:22 ` Ingo Molnar
2008-12-09 11:29 ` David Miller
2008-12-09 12:14 ` Paolo Ciarrocchi
2008-12-09 13:46 ` Ingo Molnar
2008-12-09 16:39 ` Chris Friesen
2008-12-09 19:02 ` Ingo Molnar
2008-12-09 19:51 ` Chris Friesen
2008-12-09 16:46 ` Will Newton
2008-12-09 17:35 ` Chris Friesen
2008-12-09 21:16 ` stephane eranian
2008-12-09 21:16 ` stephane eranian
2008-12-09 22:19 ` Paul Mackerras
2008-12-09 22:40 ` Andi Kleen
2008-12-10 4:44 ` Paul Mackerras
2008-12-10 5:03 ` stephane eranian
2008-12-10 10:26 ` Andi Kleen [this message]
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