From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261370AbVGYTs0 (ORCPT ); Mon, 25 Jul 2005 15:48:26 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261474AbVGYTsU (ORCPT ); Mon, 25 Jul 2005 15:48:20 -0400 Received: from prgy-npn1.prodigy.com ([207.115.54.37]:13316 "EHLO oddball.prodigy.com") by vger.kernel.org with ESMTP id S261370AbVGYTsN (ORCPT ); Mon, 25 Jul 2005 15:48:13 -0400 Message-ID: <42E542F4.8020808@tmr.com> Date: Mon, 25 Jul 2005 15:52:20 -0400 From: Bill Davidsen User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.8) Gecko/20050511 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Lee Revell CC: Ciprian , Linux Kernel Mailing List Subject: Re: kernel 2.6 speed References: <20050724191211.48495.qmail@web53608.mail.yahoo.com> <1122245346.27064.4.camel@mindpipe> In-Reply-To: <1122245346.27064.4.camel@mindpipe> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Lee Revell wrote: > On Sun, 2005-07-24 at 17:03 -0400, Florin Malita wrote: > >>the x86 timer interrupt >>frequency has increased from 100Hz to 1KHz (it's about to be lowered >>to 250Hz) > > > This is by no means a done deal. So far no one has posted ANY evidence > that dropping HZ to 250 helps (except one result on a atypically large > system), and there's plenty of evidence that it doesn't. If nothing else it does seem to make media applications unhappy under some loads. I personally think 1k should stay the default and let people with special needs use the other. Nice to select at boot time, people who need accuracy above all could use 866 (or whatever tick rate near that was the lowest error). -- -bill davidsen (davidsen@tmr.com) "The secret to procrastination is to put things off until the last possible moment - but no longer" -me