From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759973AbYAJSFV (ORCPT ); Thu, 10 Jan 2008 13:05:21 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757284AbYAJSFG (ORCPT ); Thu, 10 Jan 2008 13:05:06 -0500 Received: from ms-smtp-03.nyroc.rr.com ([24.24.2.57]:43242 "EHLO ms-smtp-03.nyroc.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756830AbYAJSFD (ORCPT ); Thu, 10 Jan 2008 13:05:03 -0500 Date: Thu, 10 Jan 2008 13:03:53 -0500 (EST) From: Steven Rostedt X-X-Sender: rostedt@gandalf.stny.rr.com To: "Pallipadi, Venkatesh" cc: Ingo Molnar , LKML , Linus Torvalds , Andrew Morton , Thomas Gleixner , "Brown, Len" , Adam Belay , Peter Zijlstra , Andi Kleen Subject: RE: [PATCH] Kick CPUS that might be sleeping in cpus_idle_wait In-Reply-To: <924EFEDD5F540B4284297C4DC59F3DEE5A2710@orsmsx423.amr.corp.intel.com> Message-ID: References: <1199759244.26343.35.camel@localhost.localdomain> <20080108033329.GI2998@bingen.suse.de> <1199911330.975.3.camel@localhost.localdomain> <1199916725.975.6.camel@localhost.localdomain> <20080110134539.GD5886@elte.hu> <924EFEDD5F540B4284297C4DC59F3DEE5A2710@orsmsx423.amr.corp.intel.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 10 Jan 2008, Pallipadi, Venkatesh wrote: > > > With 2.6.23, you can try compiling acpi processor.ko as a module and > doing insmod and rmmod in a loop. That should call cpu_idle_wait very > frequently. The thing is, after the full boot, there's too many things going on to keep a system fully idle. Little services can wake a processor up. The problem I had was that this happens on early bootup where there's not much around to wake the sleeping processor. I'm not sure if it is too much of a problem after boot up. -- Steve