From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757903AbZBEPre (ORCPT ); Thu, 5 Feb 2009 10:47:34 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752417AbZBEPr0 (ORCPT ); Thu, 5 Feb 2009 10:47:26 -0500 Received: from casper.infradead.org ([85.118.1.10]:43674 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751955AbZBEPr0 (ORCPT ); Thu, 5 Feb 2009 10:47:26 -0500 Date: Thu, 5 Feb 2009 07:47:40 -0800 From: Arjan van de Ven To: Bill Nottingham Cc: Harald Hoyer , linux-kernel@vger.kernel.org, power@bughost.org Subject: Re: [PATCH] tracer for sys_open() - sreadahead Message-ID: <20090205074740.224f7b1f@infradead.org> In-Reply-To: <20090205152442.GE6865@nostromo.devel.redhat.com> References: <497F69A4.2070007@intel.com> <20090130202219.GA1253@ucw.cz> <20090203133251.GD29046@elte.hu> <20090205150705.GC6865@nostromo.devel.redhat.com> <20090205071444.390c19bc@infradead.org> <20090205152442.GE6865@nostromo.devel.redhat.com> Organization: Intel X-Mailer: Claws Mail 3.7.0 (GTK+ 2.14.5; i386-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 5 Feb 2009 10:24:42 -0500 Bill Nottingham wrote: > Arjan van de Ven (arjan@infradead.org) said: > > you can strace init but you can't strace X > > (at least... last I tried it locked my box ;0) > > You should be able to strace X, as long as you're not doing it *from* > X. > last I tried it b0rked (yeah I'm not stupid enuogh to do that from X, at least not a second time ;-) another issue with the "use strace" approach is selinux... (this is in addition to the performance and behavioral changes) -- Arjan van de Ven Intel Open Source Technology Centre For development, discussion and tips for power savings, visit http://www.lesswatts.org