From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261628AbVFIX7A (ORCPT ); Thu, 9 Jun 2005 19:59:00 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262318AbVFIX7A (ORCPT ); Thu, 9 Jun 2005 19:59:00 -0400 Received: from dvhart.com ([64.146.134.43]:61352 "EHLO localhost.localdomain") by vger.kernel.org with ESMTP id S261628AbVFIX5E (ORCPT ); Thu, 9 Jun 2005 19:57:04 -0400 Date: Thu, 09 Jun 2005 16:56:56 -0700 From: "Martin J. Bligh" Reply-To: "Martin J. Bligh" To: Andrew Morton , Christoph Lameter Cc: linux-kernel@vger.kernel.org Subject: Re: 2.6.12-rc6-mm1 Message-ID: <1100910000.1118361416@flay> In-Reply-To: <20050607170853.3f81007a.akpm@osdl.org> References: <1004450000.1118188239@flay><20050607165656.2517b417.akpm@osdl.org> <20050607170853.3f81007a.akpm@osdl.org> X-Mailer: Mulberry/2.1.2 (Linux/x86) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org --On Tuesday, June 07, 2005 17:08:53 -0700 Andrew Morton wrote: > Christoph Lameter wrote: >> >> On Tue, 7 Jun 2005, Andrew Morton wrote: >> >> > > Diffprofile is wacko (HZ seems to be defaulting to 250 in -mm). >> > >> > Oh crap, so it does. That's wrong. >> >> Email by you and Linus indicated that 250 should be the default. > > Oh, OK. hrm. > > Martin, it would be useful if you could determine whether the kernbench > slowdown was due to the 1000Hz->250Hz change, thanks. > > I'm assuming it was the CPU scheduler patches. There are 36 of them ;) Backed them all out ... performance thunks down to earth again, and is actually the best I've seen it ever (probably 250Hz is helping, I used to run 100 in -mjb for better benefit). the +5081 item is the one to look at http://ftp.kernel.org/pub/linux/kernel/people/mbligh/abat/perf/kernbench.moe.png Patch I used was here: http://ftp.kernel.org/pub/linux/kernel/people/mbligh/abat/patches/nosched But it was just everything under the "CPU scheduler" section of your series file. M.