From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261694AbULNWqa (ORCPT ); Tue, 14 Dec 2004 17:46:30 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261692AbULNWmb (ORCPT ); Tue, 14 Dec 2004 17:42:31 -0500 Received: from mail03.syd.optusnet.com.au ([211.29.132.184]:48297 "EHLO mail03.syd.optusnet.com.au") by vger.kernel.org with ESMTP id S261694AbULNWkp (ORCPT ); Tue, 14 Dec 2004 17:40:45 -0500 References: <20041211142317.GF16322@dualathlon.random> <20041212163547.GB6286@elf.ucw.cz> <20041212222312.GN16322@dualathlon.random> <41BCD5F3.80401@kolivas.org> <1103063312.14699.54.camel@krustophenia.net> Message-ID: X-Mailer: http://www.courier-mta.org/cone/ From: Con Kolivas To: Lee Revell Cc: Con Kolivas , Andrea Arcangeli , Pavel Machek , linux-kernel@vger.kernel.org Subject: Re: dynamic-hz Date: Wed, 15 Dec 2004 09:40:11 +1100 Mime-Version: 1.0 Content-Type: text/plain; format=flowed; charset="US-ASCII" Content-Disposition: inline Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Lee Revell writes: > On Mon, 2004-12-13 at 10:36 +1100, Con Kolivas wrote: >> The performance benefit, if any, is often lost in noise during >> benchmarks and when there, is less than 1%. > > I have measured 2.1-2.3% residency for the timer ISR on my 600Mhz VIA > C3. And this is a desktop - you have many many embedded systems that > are slower. For these systems the difference is very real. Could you explain residency and it's relevance to throughput please? I've not heard this term before. Cheers, Con