From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264245AbTEXOPN (ORCPT ); Sat, 24 May 2003 10:15:13 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264246AbTEXOPN (ORCPT ); Sat, 24 May 2003 10:15:13 -0400 Received: from holomorphy.com ([66.224.33.161]:16281 "EHLO holomorphy") by vger.kernel.org with ESMTP id S264245AbTEXOPM (ORCPT ); Sat, 24 May 2003 10:15:12 -0400 Date: Sat, 24 May 2003 07:28:09 -0700 From: William Lee Irwin III To: Marc-Christian Petersen Cc: Linux Kernel Mailing List , Christian Klose Subject: Re: I/O problems in 2.4.19/2.4.20/2.4.21-rc3 Message-ID: <20030524142809.GZ8978@holomorphy.com> Mail-Followup-To: William Lee Irwin III , Marc-Christian Petersen , Linux Kernel Mailing List , Christian Klose References: <200305231405.54599.christian.klose@freenet.de> <200305231546.27463.christian.klose@freenet.de> <200305241615.49463.m.c.p@wolk-project.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200305241615.49463.m.c.p@wolk-project.de> Organization: The Domain of Holomorphy User-Agent: Mutt/1.5.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sat, May 24, 2003 at 04:19:40PM +0200, Marc-Christian Petersen wrote: > --- old/kernel/sched.c 2003-05-24 14:45:57.000000000 +0200 > +++ 2.5-mcp/kernel/sched.c 2003-05-24 16:18:42.000000000 +0200 > @@ -65,7 +65,7 @@ > * they expire. > */ > #define MIN_TIMESLICE ( 10 * HZ / 1000) > -#define MAX_TIMESLICE (200 * HZ / 1000) > +#define MAX_TIMESLICE ( 10 * HZ / 1000) > #define CHILD_PENALTY 50 > #define PARENT_PENALTY 100 > #define EXIT_WEIGHT 3 This looks highly suspicious as it essentially removes dynamic timeslice sizing. If this fixes something, then dynamic timeslice heuristics are going wrong somewhere that should be properly described and handled, not this kind of shenanigan. -- wli