From: Pekka Enberg <penberg@cs.helsinki.fi>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Arjan van de Ven <arjan@infradead.org>,
linux-kernel@vger.kernel.org, mingo@elte.hu, sandmann@redhat.com,
tglx@tglx.de, hpa@zytor.com
Subject: Re: [PATCH] x86: add the debugfs interface for the sysprof tool
Date: Sun, 24 Feb 2008 04:49:18 +0200 [thread overview]
Message-ID: <47C0DB2E.5000404@cs.helsinki.fi> (raw)
In-Reply-To: <20080223104611.a3430285.akpm@linux-foundation.org>
Hi Andrew,
Andrew Morton wrote:
> I didn't need to write a new kernel module to enable that
> thirteen-character shell script, and I don't believe one needs to write a
> new kernel module to put a nice easy-to-use GUI around oprofile either.
>
> This is one of those i-cant-believe-im-having-this-discussion discussions.
Sysprof tracks the full stack frame so it can provide meaningful call
tree (who called what) which is invaluable for spotting hot _paths_. I
don't see how oprofile can do that as it tracks instruction pointers only.
Pekka
next prev parent reply other threads:[~2008-02-24 2:50 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-19 20:37 [PATCH] x86: add the debugfs interface for the sysprof tool Arjan van de Ven
2008-02-20 9:10 ` Ingo Molnar
2008-02-26 4:13 ` Anton Blanchard
2008-02-26 8:57 ` Ingo Molnar
2008-02-20 18:16 ` Peter Zijlstra
2008-02-20 18:39 ` Arjan van de Ven
2008-02-20 18:53 ` Peter Zijlstra
2008-02-20 18:58 ` Peter Zijlstra
2008-02-26 5:03 ` Anton Blanchard
2008-02-20 19:26 ` Arjan van de Ven
2008-02-20 20:58 ` Peter Zijlstra
2008-02-20 21:07 ` Arjan van de Ven
2008-02-20 21:44 ` Peter Zijlstra
2008-02-20 22:36 ` Arjan van de Ven
2008-02-23 8:11 ` Andrew Morton
2008-02-23 11:37 ` Ingo Molnar
2008-02-23 13:53 ` John Levon
2008-02-23 15:50 ` Ingo Molnar
2008-02-23 20:15 ` Soeren Sandmann
2008-02-23 20:42 ` Andrew Morton
2008-02-26 5:13 ` Anton Blanchard
2008-02-26 9:02 ` Ingo Molnar
2008-02-26 17:29 ` Andrew Morton
2008-02-27 14:05 ` Anton Blanchard
2008-02-24 13:10 ` Theodore Tso
2008-02-24 13:44 ` Ingo Molnar
2008-02-24 14:33 ` Ingo Molnar
2008-02-24 16:32 ` John Levon
2008-02-24 18:19 ` Theodore Tso
2008-02-23 18:40 ` Andrew Morton
2008-02-23 11:51 ` Pekka Enberg
2008-02-23 12:22 ` Ingo Molnar
2008-02-23 12:29 ` Pekka Enberg
2008-02-23 18:46 ` Andrew Morton
2008-02-24 2:49 ` Pekka Enberg [this message]
2008-02-24 3:12 ` Nicholas Miell
2008-02-26 6:27 ` Pekka Enberg
2008-02-26 6:48 ` Pekka Enberg
2008-02-26 8:55 ` Ingo Molnar
2008-02-23 14:54 ` Pekka Enberg
2008-02-23 19:01 ` Andrew Morton
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