From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Massimo Cetra" Subject: RE: Strange vmstat output. 2.6.10 Scheduler? Date: Tue, 1 Feb 2005 11:34:33 +0100 Message-ID: <20050201103414.F195184008@server1.navynet.it> References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Received: from [213.188.213.77] ([213.188.213.77]:31171 "EHLO server1.navynet.it") by vger.kernel.org with ESMTP id S261968AbVBAKeS (ORCPT ); Tue, 1 Feb 2005 05:34:18 -0500 In-Reply-To: Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: "'Catalin(ux aka Dino) BOIE'" , linux-kernel@vger.kernel.org Cc: linux-ide@vger.kernel.org > It seems strange because iowait is at 90% but nothing is > trasnfered to/from disk. Why is that? > > I run postgresql on this server and I'm not satistied by it's speed. > > Single Pentium IV, IDE disk. > > What can be the problem? I have noticed it several months ago. Maybe this thread could be useful for you. http://www.ussg.iu.edu/hypermail/linux/kernel/0408.2/1758.html According to my tests, 2.4 with -lck still performs better than 2.6, so I use 2.4 on production DB servers with any DB. Massimo From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261968AbVBAKeX (ORCPT ); Tue, 1 Feb 2005 05:34:23 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261974AbVBAKeX (ORCPT ); Tue, 1 Feb 2005 05:34:23 -0500 Received: from [213.188.213.77] ([213.188.213.77]:31171 "EHLO server1.navynet.it") by vger.kernel.org with ESMTP id S261968AbVBAKeS (ORCPT ); Tue, 1 Feb 2005 05:34:18 -0500 From: "Massimo Cetra" To: "'Catalin(ux aka Dino) BOIE'" , Cc: Subject: RE: Strange vmstat output. 2.6.10 Scheduler? Date: Tue, 1 Feb 2005 11:34:33 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Office Outlook, Build 11.0.6353 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 Thread-Index: AcUISCYcxFL+WygES/qXCtUDvuswnwAAIoTw In-Reply-To: Message-Id: <20050201103414.F195184008@server1.navynet.it> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > It seems strange because iowait is at 90% but nothing is > trasnfered to/from disk. Why is that? > > I run postgresql on this server and I'm not satistied by it's speed. > > Single Pentium IV, IDE disk. > > What can be the problem? I have noticed it several months ago. Maybe this thread could be useful for you. http://www.ussg.iu.edu/hypermail/linux/kernel/0408.2/1758.html According to my tests, 2.4 with -lck still performs better than 2.6, so I use 2.4 on production DB servers with any DB. Massimo