From: Nicholas Miell <nmiell@comcast.net>
To: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Andrew Morton <akpm@linux-foundation.org>,
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: Sat, 23 Feb 2008 19:12:27 -0800 [thread overview]
Message-ID: <1203822747.2439.1.camel@entropy> (raw)
In-Reply-To: <47C0DB2E.5000404@cs.helsinki.fi>
On Sun, 2008-02-24 at 04:49 +0200, Pekka Enberg wrote:
> 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
You could try passing the --callgraph option to opcontrol.
--
Nicholas Miell <nmiell@comcast.net>
next prev parent reply other threads:[~2008-02-24 3:12 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
2008-02-24 3:12 ` Nicholas Miell [this message]
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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