From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261215AbULMWyb (ORCPT ); Mon, 13 Dec 2004 17:54:31 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261204AbULMWyb (ORCPT ); Mon, 13 Dec 2004 17:54:31 -0500 Received: from mail-relay-2.tiscali.it ([213.205.33.42]:42680 "EHLO mail-relay-2.tiscali.it") by vger.kernel.org with ESMTP id S261359AbULMWl3 (ORCPT ); Mon, 13 Dec 2004 17:41:29 -0500 Date: Mon, 13 Dec 2004 23:41:36 +0100 From: Andrea Arcangeli To: Olaf Hering Cc: linux-kernel@vger.kernel.org Subject: Re: dynamic-hz Message-ID: <20041213224136.GQ16322@dualathlon.random> References: <20041211142317.GF16322@dualathlon.random> <20041213202642.GA11323@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20041213202642.GA11323@suse.de> X-GPG-Key: 1024D/68B9CB43 13D9 8355 295F 4823 7C49 C012 DFA1 686E 68B9 CB43 X-PGP-Key: 1024R/CB4660B9 CC A0 71 81 F4 A0 63 AC C0 4B 81 1D 8C 15 C8 E5 User-Agent: Mutt/1.5.6i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Dec 13, 2004 at 09:26:42PM +0100, Olaf Hering wrote: > Not a comment, more a question: > > Will there be a real benefit by running an old PII 200MMX at 100HZ > instead of 1000HZ? > I guess less interrupts should improve the desktop performance a little bit. On a pii the slowdown is probably more than 1%, the slower the cpu, the more 100hz is appropriate. This is not going to be very noticeable on a desktop since a desktop is often idle, but only on servers it should help (for example kernel compiles will be more than 1% faster).