From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264583AbUAEPpv (ORCPT ); Mon, 5 Jan 2004 10:45:51 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261731AbUAEPpv (ORCPT ); Mon, 5 Jan 2004 10:45:51 -0500 Received: from chaos.analogic.com ([204.178.40.224]:21120 "EHLO chaos.analogic.com") by vger.kernel.org with ESMTP id S265167AbUAEPoC (ORCPT ); Mon, 5 Jan 2004 10:44:02 -0500 Date: Mon, 5 Jan 2004 10:44:18 -0500 (EST) From: "Richard B. Johnson" X-X-Sender: root@chaos Reply-To: root@chaos.analogic.com To: Biplab Sarkar cc: linux-kernel@vger.kernel.org Subject: Re: system speed In-Reply-To: <20040105151938.92587.qmail@web20023.mail.yahoo.com> Message-ID: References: <20040105151938.92587.qmail@web20023.mail.yahoo.com> 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 On Mon, 5 Jan 2004, Biplab Sarkar wrote: > Hi, > > I am new to this list. I have a question would be > greatful if anyone answers it. > > I have observed that my linux PC (Celeron-633Mhz) runs > significantly slow after I have installed Mandrake-9.2 > which has kernel (2.4.22). My earlier kernel was > 2.2.22 (mandrake 7.2). The speed seems to be slow > right from the bootup sequence. > > I have also observed that if I do an abnormal shutdown > of the system (by pressing the reset button of the > computer) the system speeds up significantly somewhat > comparable to my old kernel speed. Right from the > bootup sequence every thing runs fast. > > I have also observed that the CPU utilization is very > high for case when the I try a normal shutdown > followed by a bootup. I could not see any single > process that would be hogging the CPU. It seems like > any process that gets the CPU likes to hog the CPU. > > > Any idea what is it that is causing the system to run > faster when we have an abnormal shutdown of the > system? > > Thanks, > Biplab After you hit the reset button, the BIOS will perform a cold-boot which means everything gets initialized from scratch. Aside from the file-system rebuild that occurs when you improperly shut-down a system, there should be no additional history and, therefore, no difference in performance before and after your shutdown sequence. If you execute `top` you should clearly see what process, if any, is hogging the CPU. Cheers, Dick Johnson Penguin : Linux version 2.4.22 on an i686 machine (797.90 BogoMips). Note 96.31% of all statistics are fiction.