From: Andi Kleen <ak@linux.intel.com>
To: Stephane Eranian <eranian@google.com>
Cc: Ingo Molnar <mingo@elte.hu>,
Arnaldo Carvalho de Melo <acme@infradead.org>,
linux-kernel@vger.kernel.org,
Peter Zijlstra <peterz@infradead.org>,
Lin Ming <ming.m.lin@intel.com>,
Arnaldo Carvalho de Melo <acme@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
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: Fri, 22 Apr 2011 09:51:20 -0700 [thread overview]
Message-ID: <20110422165120.GA16607@tassilo.jf.intel.com> (raw)
In-Reply-To: <BANLkTinaZyHNV2Bm7CJFJ11WBCPGgsYijQ@mail.gmail.com>
> Once you have clear and precise definition, then we can look at the actual
> events and figure out a mapping.
It's unclear this can be even done. Linux runs on a wide variety of micro
architectures, with all kinds of cache architectures.
Micro architectures are so different. I suspect a "generic" definition would
need to be so vague as to be useless.
This in general seems to be the problem of the current cache events.
Overall for any interesting analysis you need to go CPU specific.
Abstracted performance analysis is a contradiction in terms.
-Andi
--
ak@linux.intel.com -- Speaking for myself only
next prev parent reply other threads:[~2011-04-22 16:52 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 [this message]
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
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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