Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759921AbYJJNZo (ORCPT ); Fri, 10 Oct 2008 09:25:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1759132AbYJJNZP (ORCPT ); Fri, 10 Oct 2008 09:25:15 -0400 Received: from netgear.net.ru ([195.178.208.66]:52526 "EHLO tservice.net.ru" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1758903AbYJJNZN (ORCPT ); Fri, 10 Oct 2008 09:25:13 -0400 Date: Fri, 10 Oct 2008 17:25:10 +0400 From: Evgeniy Polyakov To: Ingo Molnar Cc: Peter Zijlstra , linux-kernel@vger.kernel.org, netdev@vger.kernel.org, David Miller , Mike Galbraith , Nick Piggin Subject: Re: [tbench regression fixes]: digging out smelly deadmen. Message-ID: <20081010132510.GA25834@tservice.net.ru> References: <20081009231759.GA8664@tservice.net.ru> <20081010080910.GA31723@tservice.net.ru> <20081010091511.GC5116@elte.hu> <20081010113100.GA1030@tservice.net.ru> <20081010114042.GA19487@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20081010114042.GA19487@elte.hu> User-Agent: Mutt/1.5.13 (2006-08-11) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 777 Lines: 24 On Fri, Oct 10, 2008 at 01:40:42PM +0200, Ingo Molnar (mingo@elte.hu) wrote: > make sure you have this fix in tip/master already: > > 5b7dba4: sched_clock: prevent scd->clock from moving backwards > > Note: Mike is 100% correct in suggesting that a very good cpu_clock() is > needed for precise scheduling. The last commit is 5dc64a3442b98eaa and aforementioned changeset was included. Result is quite bad: vanilla 27: 347.222 no TSO/GSO: 357.331 no hrticks: 382.983 no balance: 389.802 tip: 365.576 -- Evgeniy Polyakov -- 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/