Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965090AbWADVXM (ORCPT ); Wed, 4 Jan 2006 16:23:12 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965285AbWADVXM (ORCPT ); Wed, 4 Jan 2006 16:23:12 -0500 Received: from mx1.redhat.com ([66.187.233.31]:10478 "EHLO mx1.redhat.com") by vger.kernel.org with ESMTP id S965090AbWADVXL (ORCPT ); Wed, 4 Jan 2006 16:23:11 -0500 Date: Wed, 4 Jan 2006 16:22:50 -0500 From: Dave Jones To: Arjan van de Ven Cc: Con Kolivas , ck list , linux kernel mailing list Subject: Re: 2.6.15-ck1 Message-ID: <20060104212250.GC9754@redhat.com> Mail-Followup-To: Dave Jones , Arjan van de Ven , Con Kolivas , ck list , linux kernel mailing list References: <200601041200.03593.kernel@kolivas.org> <20060104190554.GG10592@redhat.com> <20060104195726.GB14782@redhat.com> <1136406837.2839.67.camel@laptopd505.fenrus.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1136406837.2839.67.camel@laptopd505.fenrus.org> User-Agent: Mutt/1.4.2.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1228 Lines: 34 On Wed, Jan 04, 2006 at 09:33:56PM +0100, Arjan van de Ven wrote: > > Ah interesting. It needs to be totally idle for a period of time before > > anything starts to happen at all. After about a minute of doing nothing, > > it started to fluctuate once a second 20,21,19,20,19,20,18,21,19,20,22 etc.. > > > sounds like we need some sort of profiler or benchmarker or at least a > tool that helps finding out which timers are regularly firing, with the > aim at either grouping them or trying to reduce their disturbance in > some form. And the winner (by a *big* margin) is... USB. rh_timer_func() gets called quite a *lot*. (Looks like every 250ms) cursor_timer_handler() too. *blinky blinky* X causes lots of hits to it_real_fn() (incidentally, the power fluctuation only happens when at the console. When in X, it never happens, so we're probably hitting this a little too often in that case). lots of apps cause process_timeout to be hit frequently. Dave - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/