Date: Tue, 26 Feb 2008 10:02:23 +0100
From: Ingo Molnar <mingo@elte.hu>
To: Anton Blanchard <anton@samba.org>
Cc: Soeren Sandmann <sandmann@daimi.au.dk>,
       John Levon <levon@movementarian.org>,
       Andrew Morton <akpm@linux-foundation.org>,
       Arjan van de Ven <arjan@infradead.org>, linux-kernel@vger.kernel.org,
       tglx@tglx.de, hpa@zytor.com
Subject: Re: [PATCH] x86: add the debugfs interface for the sysprof tool
Message-ID: <20080226090223.GG9857@elte.hu>
References: <20080219123756.6261c13c@laptopd505.fenrus.org> <20080223001130.d8922136.akpm@linux-foundation.org> <20080223113724.GB31304@elte.hu> <20080223135335.GA28464@totally.trollied.org.uk> <ye8ejb3e8ef.fsf@camel10.daimi.au.dk> <20080226051307.GC17772@kryten>
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* Anton Blanchard <anton@samba.org> wrote:

> This surprises me. Can you please elaborate on why oprofile is "much 
> less useful" than sysprof?

see the thread you are replying to.

> Anton - who has used oprofile to analyse and tune databases, JVMs,
> 	compilers and operating systems. Maybe I've been missing out on
> 	the killer app for all this time!!!

it's OK if you use it full time and if you are amongst the 0.001% of the 
developer population we call "the best kernel hackers on the planet" ;-) 

It sucks badly if you use it occasionally and have to re-learn its 
non-trivial usage and its quirks every time. As it happens, most 
userspace developers are in this second category.

(and i'm not worried about the first category at all - if needed they 
can write their own OS from scratch ;-)

	Ingo
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