From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756843AbZBKMky (ORCPT ); Wed, 11 Feb 2009 07:40:54 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754496AbZBKMko (ORCPT ); Wed, 11 Feb 2009 07:40:44 -0500 Received: from mx2.mail.elte.hu ([157.181.151.9]:42799 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752995AbZBKMko (ORCPT ); Wed, 11 Feb 2009 07:40:44 -0500 Date: Wed, 11 Feb 2009 13:40:31 +0100 From: Ingo Molnar To: J K Rai Cc: Peter Zijlstra , linux-kernel@vger.kernel.org Subject: Re: Time slice for SCHED_BATCH ( CFS) Message-ID: <20090211124031.GG16535@elte.hu> References: <315626.71453.qm@web94713.mail.in2.yahoo.com> <20090211102024.GI20518@elte.hu> <1234348436.23438.119.camel@twins> <303179.28635.qm@web94707.mail.in2.yahoo.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <303179.28635.qm@web94707.mail.in2.yahoo.com> User-Agent: Mutt/1.5.18 (2008-05-17) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * J K Rai wrote: > Thanks, > > I want to do profiling (e.g. on-chip cache related behavior of processes) from > user-land and want to study the impact of time-slice and sampling interval on the > quality of profile. Hence thought of knowing the time-slice. btw., how do you do that profiling? How do you measure cache behavior? Ingo