From: Peter Zijlstra <peterz@infradead.org>
To: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>,
arun@sharma-home.net, Stephane Eranian <eranian@google.com>,
Arnaldo Carvalho de Melo <acme@infradead.org>,
linux-kernel@vger.kernel.org, Lin Ming <ming.m.lin@intel.com>,
Arnaldo Carvalho de Melo <acme@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
eranian@gmail.com, Arun Sharma <asharma@fb.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [generalized cache events] Re: [PATCH 1/1] perf tools: Add missing user space support for config1/config2
Date: Sat, 23 Apr 2011 09:50:12 +0200 [thread overview]
Message-ID: <1303545012.2298.44.camel@twins> (raw)
In-Reply-To: <20110423000347.GC9328@tassilo.jf.intel.com>
On Fri, 2011-04-22 at 17:03 -0700, Andi Kleen wrote:
> > > Yes, and note that with instructions events we even have skid-less PEBS
> > > profiling so seeing the precise .
> > - location of instructions is possible.
>
> It was better when it was eaten. PEBS does not actually eliminated
> skid unfortunately. The interrupt still occurs later, so the
> instruction location is off.
>
> PEBS merely gives you more information.
You're so skilled at not actually saying anything useful. Are you
perchance referring to the fact that the IP reported in the PEBS data is
exactly _one_ instruction off? Something that is demonstrated to be
fixable?
Or are you defining skid differently and not telling us your definition?
What are you saying?
next prev parent reply other threads:[~2011-04-23 7:50 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-22 8:47 [PATCH 1/1] perf tools: Add missing user space support for config1/config2 Stephane Eranian
2011-04-22 9:23 ` Ingo Molnar
2011-04-22 9:41 ` Stephane Eranian
2011-04-22 10:52 ` [generalized cache events] " Ingo Molnar
2011-04-22 12:04 ` Stephane Eranian
2011-04-22 13:18 ` Ingo Molnar
2011-04-22 20:31 ` Stephane Eranian
2011-04-22 20:47 ` Ingo Molnar
2011-04-23 12:13 ` Stephane Eranian
2011-04-23 12:49 ` Ingo Molnar
2011-04-22 21:03 ` Ingo Molnar
2011-04-23 12:27 ` Stephane Eranian
2011-04-22 16:51 ` Andi Kleen
2011-04-22 19:57 ` Ingo Molnar
2011-04-26 9:25 ` Peter Zijlstra
2011-04-22 16:50 ` arun
2011-04-22 17:00 ` Andi Kleen
2011-04-22 20:30 ` Ingo Molnar
2011-04-22 20:32 ` Ingo Molnar
2011-04-23 0:03 ` Andi Kleen
2011-04-23 7:50 ` Peter Zijlstra [this message]
2011-04-23 12:06 ` Stephane Eranian
2011-04-23 12:36 ` Ingo Molnar
2011-04-23 13:16 ` Peter Zijlstra
2011-04-25 18:48 ` Stephane Eranian
2011-04-25 19:40 ` Andi Kleen
2011-04-25 19:55 ` Ingo Molnar
2011-04-24 2:15 ` Andi Kleen
2011-04-24 2:19 ` Andi Kleen
2011-04-25 17:41 ` Ingo Molnar
2011-04-25 18:00 ` Dehao Chen
[not found] ` <BANLkTiks31-pMJe4zCKrppsrA1d6KanJFA@mail.gmail.com>
2011-04-25 18:05 ` Ingo Molnar
2011-04-25 18:39 ` Stephane Eranian
2011-04-25 19:45 ` Ingo Molnar
2011-04-23 8:02 ` Ingo Molnar
2011-04-23 20:14 ` [PATCH] perf events: Add stalled cycles generic event - PERF_COUNT_HW_STALLED_CYCLES Ingo Molnar
2011-04-24 6:16 ` Arun Sharma
2011-04-25 17:37 ` Ingo Molnar
2011-04-26 9:25 ` Peter Zijlstra
2011-04-26 14:00 ` Ingo Molnar
2011-04-27 11:11 ` Ingo Molnar
2011-04-27 14:47 ` Arun Sharma
2011-04-27 15:48 ` Ingo Molnar
2011-04-27 16:27 ` Ingo Molnar
2011-04-27 19:05 ` Arun Sharma
2011-04-27 19:03 ` Arun Sharma
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