From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265100AbTLCRVI (ORCPT ); Wed, 3 Dec 2003 12:21:08 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265097AbTLCRVI (ORCPT ); Wed, 3 Dec 2003 12:21:08 -0500 Received: from tmr-02.dsl.thebiz.net ([216.238.38.204]:35338 "EHLO gatekeeper.tmr.com") by vger.kernel.org with ESMTP id S265100AbTLCRVE (ORCPT ); Wed, 3 Dec 2003 12:21:04 -0500 To: linux-kernel@vger.kernel.org Path: gatekeeper.tmr.com!davidsen From: davidsen@tmr.com (bill davidsen) Newsgroups: mail.linux-kernel Subject: Re: NForce2 pseudoscience stability testing (2.6.0-test11) Date: 3 Dec 2003 17:09:55 GMT Organization: TMR Associates, Schenectady NY Message-ID: References: <3FCD21E1.5080300@netzentry.com> <1070411338.2452.66.camel@athlonxp.bradney.info> <3FCD32F5.2050002@gmx.de> X-Trace: gatekeeper.tmr.com 1070471395 18852 192.168.12.62 (3 Dec 2003 17:09:55 GMT) X-Complaints-To: abuse@tmr.com Originator: davidsen@gatekeeper.tmr.com Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org In article <3FCD32F5.2050002@gmx.de>, Prakash K. Cheemplavam wrote: | > smp off, preempt off. lapic on, apic on, acpi on | | Why haven't you enabled preempt? Does it lock with preempt on? I haven't found preempt to cause problems with my applications, but neither have I seen any significant gain in throughput or responsiveness in 2.6. I did see small gains in 2.4, but not enough to motivate me to add the feature as a patch or even, in 2.6, enable it as an option. I don't know about the original poster, but the reports of problems discourage exploration unless the application is likely to benefit from slight gains in response and to have multiple tasks of different priority running. Have you seen a benefit from preempt? And if so, what application and how much? I may not be doing anything which benefits from preempt enough to notice (news, mail and dns servers, desktops), but other than dns on 2.4 I haven't seen improvement. enlightenmet, please? -- bill davidsen CTO, TMR Associates, Inc Doing interesting things with little computers since 1979.