From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266184AbUFPGPz (ORCPT ); Wed, 16 Jun 2004 02:15:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266185AbUFPGPz (ORCPT ); Wed, 16 Jun 2004 02:15:55 -0400 Received: from ip-65-77-168-70-muca.aerosurf.net ([65.77.168.70]:51433 "EHLO bedevere.spamaps.org") by vger.kernel.org with ESMTP id S266184AbUFPGPv (ORCPT ); Wed, 16 Jun 2004 02:15:51 -0400 Subject: Re: PROBLEM: Heavy iowait on 2.6 kernels From: Clint Byrum To: linux-kernel@vger.kernel.org In-Reply-To: <1086942905.10540.69.camel@cronos.home.vsb> References: <1086942905.10540.69.camel@cronos.home.vsb> Content-Type: text/plain Message-Id: <1087366549.1190.6.camel@lancelot> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 Date: Tue, 15 Jun 2004 23:15:50 -0700 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2004-06-11 at 01:35, Guy Van Sanden wrote: > I recently discovered why my new Gentoo server slows to a crawl on a > intermediate load on the 2.6 kernel series. The reason seems to be an > unusual amount of iowait. This appears similar to the problem both myself and Phy Prahbab reported about 2.6 and hitting the disks too often. I'm wondering, what kind of workload does your machine see, and what sort of disk system is in it?