From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264356AbTL3CxR (ORCPT ); Mon, 29 Dec 2003 21:53:17 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264361AbTL3CxR (ORCPT ); Mon, 29 Dec 2003 21:53:17 -0500 Received: from [24.35.117.106] ([24.35.117.106]:38283 "EHLO localhost.localdomain") by vger.kernel.org with ESMTP id S264356AbTL3CxO (ORCPT ); Mon, 29 Dec 2003 21:53:14 -0500 Date: Mon, 29 Dec 2003 21:53:13 -0500 (EST) From: Thomas Molina X-X-Sender: tmolina@localhost.localdomain To: Kernel Mailing List Subject: Re: 2.6.0 performance problems In-Reply-To: Message-ID: References: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > > Under 2.6 top shows: > > user nice system irq softirq iowait idle > > 0.9 0 5.3 0.9 0.3 92.6 0 > > > > Execution time for the test was: > > real 22m42.397s > > user 0m37.753s > > sys 0m54.043s > > > Changing 2.6 to 8 from 255 changed times: > > real 25m39.653s > user 0m37.594s > sys 0m55.454s Changing readahead to 8192 increased the real time to 28 minutes and left the user and sys times essentially unchanged. I've recompiled with profiling support. I'll give an update on that when I can.