From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030355AbVH0KHc (ORCPT ); Sat, 27 Aug 2005 06:07:32 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030356AbVH0KHc (ORCPT ); Sat, 27 Aug 2005 06:07:32 -0400 Received: from wproxy.gmail.com ([64.233.184.195]:13973 "EHLO wproxy.gmail.com") by vger.kernel.org with ESMTP id S1030355AbVH0KHc convert rfc822-to-8bit (ORCPT ); Sat, 27 Aug 2005 06:07:32 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=KUi0242O7TredUNtWGZLdiNqVt9sStk85Qz/+3Nr5NfgcdZsltDHPqwknAEa7QcnuHhaSWI5MiWHtcGA6olGaFejdnQs8mW8b3LTqRZEac89ysG+o9SrcIqS5cRmZUWauj4X532P9MndT1ICzA543RM3+Z0VDx6AwyWGT2lnPwE= Message-ID: <6bffcb0e050827030772a47f57@mail.gmail.com> Date: Sat, 27 Aug 2005 12:07:29 +0200 From: Michal Piotrowski To: Justin Piszcz Subject: Re: Kernel 2.6.13-rc7 Latency Question Cc: LKML In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Content-Disposition: inline References: Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi, On 8/27/05, Justin Piszcz wrote: > > These options are self-explanatory: > > x x ( ) No Forced Preemption (Server) x > x x x ( ) Voluntary Kernel Preemption (Desktop) x > x x x (X) Preemptible Kernel (Low-Latency Desktop) x x > > > > It says 100 HZ or 250 HZ is good for SMP systems; however, what if I am > using a P4 machine with 1 CPU (HT), is 1000HZ still the way to go, as its > not really 2 *REAL* cpus? I use 1000HZ on my P4 machine, HT enabled, staircase scheduler. See LKML topic "Schedulers benchmark" if you want more information/benchmarks results. Regards, Michal Piotrowski