From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756480AbYIQVyV (ORCPT ); Wed, 17 Sep 2008 17:54:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753442AbYIQVyE (ORCPT ); Wed, 17 Sep 2008 17:54:04 -0400 Received: from casper.infradead.org ([85.118.1.10]:59097 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756135AbYIQVyB (ORCPT ); Wed, 17 Sep 2008 17:54:01 -0400 Date: Wed, 17 Sep 2008 14:54:00 -0700 From: Arjan van de Ven To: Sitsofe Wheeler Cc: linux-kernel@vger.kernel.org, Ingo Molnar , peterz@infradead.org Subject: Re: How how latent should non-preemptive scheduling be? Message-ID: <20080917145400.29d1809c@infradead.org> In-Reply-To: <48D17B47.7080704@yahoo.com> References: <48D17B47.7080704@yahoo.com> Organization: Intel X-Mailer: Claws Mail 3.5.0 (GTK+ 2.12.11; 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 Wed, 17 Sep 2008 22:48:55 +0100 Sitsofe Wheeler wrote: > Arjan van de Ven wrote: > > this says you haven't done "make install" on the latencytop > > directory so it's not translating things for you.. can you do that > > please? > > > Cause Maximum > > Percentage Scheduler: waiting for cpu 208 msec 59.4 % you're rather CPU bound, and your process was woken up but didn't run for over 200 milliseconds.. that sounds like a scheduler fairness issue!