From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266479AbUHWSZi (ORCPT ); Mon, 23 Aug 2004 14:25:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266391AbUHWSY4 (ORCPT ); Mon, 23 Aug 2004 14:24:56 -0400 Received: from zero.aec.at ([193.170.194.10]:25094 "EHLO zero.aec.at") by vger.kernel.org with ESMTP id S266479AbUHWST0 (ORCPT ); Mon, 23 Aug 2004 14:19:26 -0400 To: John Levon cc: linux-kernel@vger.kernel.org Subject: Re: DTrace-like analysis possible with future Linux kernels? References: <2v3Ad-5tc-29@gated-at.bofh.it> <2v4w9-6aQ-5@gated-at.bofh.it> <2vxeJ-4kg-3@gated-at.bofh.it> <2vZNN-7AT-33@gated-at.bofh.it> <2w5q4-34M-1@gated-at.bofh.it> <2w9Dq-65C-13@gated-at.bofh.it> From: Andi Kleen Date: Mon, 23 Aug 2004 20:19:10 +0200 In-Reply-To: <2w9Dq-65C-13@gated-at.bofh.it> (John Levon's message of "Mon, 23 Aug 2004 01:10:08 +0200") Message-ID: User-Agent: Gnus/5.110003 (No Gnus v0.3) Emacs/21.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org John Levon writes: > On Sun, Aug 22, 2004 at 08:27:38PM +0200, Tomasz K?oczko wrote: > >> As same as KProbe/DTrace. Can you use OProfile for something other tnan >> profiling ? Probably yes and this answer opens: probably it will be good >> prepare some common code for KProbe and Oprofile. > > I don't see an overlap here, except maybe the possibility of delivering > sample events into the kprobes framework Not sure what you mean with "delivering into the kprobes framework" kprobes currently only uses printk which really isn't up to the task of any significant data delivery. The IBM people have relayfs to solve this problem, eventually this should be probably merged too. Without something like relayfs i don't see any way to compete with dtrace. -Andi