Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758720AbYJJLnM (ORCPT ); Fri, 10 Oct 2008 07:43:12 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754548AbYJJLmz (ORCPT ); Fri, 10 Oct 2008 07:42:55 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:54402 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753844AbYJJLmz (ORCPT ); Fri, 10 Oct 2008 07:42:55 -0400 Date: Fri, 10 Oct 2008 13:42:45 +0200 From: Ingo Molnar To: Evgeniy Polyakov Cc: Peter Zijlstra , linux-kernel@vger.kernel.org, netdev@vger.kernel.org, David Miller , Mike Galbraith Subject: Re: [tbench regression fixes]: digging out smelly deadmen. Message-ID: <20081010114245.GB19487@elte.hu> References: <20081009231759.GA8664@tservice.net.ru> <20081010080910.GA31723@tservice.net.ru> <20081010091511.GC5116@elte.hu> <20081010113100.GA1030@tservice.net.ru> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20081010113100.GA1030@tservice.net.ru> 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,DNS_FROM_SECURITYSAGE autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] 0.0 DNS_FROM_SECURITYSAGE RBL: Envelope sender in blackholes.securitysage.com Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 963 Lines: 30 * Evgeniy Polyakov wrote: > > i'm glad that you are looking into this! That is an SMP box, right? > > If yes then could you try this sched-domains tuning utility i have > > written yesterday (incidentally): > > > > http://redhat.com/~mingo/cfs-scheduler/tune-sched-domains > > I've removed SD_BALANCE_NEWIDLE: > # ./tune-sched-domains $[191-2] > And got noticeble improvement (each new line has fixes from previous): > > vanilla 27: 347.222 > no TSO/GSO: 357.331 > no hrticks: 382.983 > no balance: 389.802 okay. The target is 470 MB/sec, right? (Assuming the workload is sane and 'fixing' it does not mean we have to schedule worse.) We are still way off from 470 MB/sec. Ingo -- 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/