From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S267449AbUHPFsZ (ORCPT ); Mon, 16 Aug 2004 01:48:25 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S267446AbUHPFsZ (ORCPT ); Mon, 16 Aug 2004 01:48:25 -0400 Received: from mustang.oldcity.dca.net ([216.158.38.3]:28349 "HELO mustang.oldcity.dca.net") by vger.kernel.org with SMTP id S267449AbUHPFsC (ORCPT ); Mon, 16 Aug 2004 01:48:02 -0400 Subject: Re: [patch] voluntary-preempt-2.6.8.1-P1 From: Lee Revell To: Ingo Molnar Cc: Florian Schmidt , linux-kernel , Felipe Alfaro Solana In-Reply-To: <20040816050248.GA16522@elte.hu> References: <1092624221.867.118.camel@krustophenia.net> <20040816032806.GA11750@elte.hu> <20040816033623.GA12157@elte.hu> <1092627691.867.150.camel@krustophenia.net> <20040816034618.GA13063@elte.hu> <1092628493.810.3.camel@krustophenia.net> <20040816040515.GA13665@elte.hu> <1092630122.810.25.camel@krustophenia.net> <20040816043302.GA14979@elte.hu> <1092632236.801.1.camel@krustophenia.net> <20040816050248.GA16522@elte.hu> Content-Type: text/plain Message-Id: <1092635332.793.5.camel@krustophenia.net> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 Date: Mon, 16 Aug 2004 01:48:52 -0400 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2004-08-16 at 01:02, Ingo Molnar wrote: > yeah. If it's the first chunk then we could perhaps avoid it by doing it > outside of the lock. > Hmm, this is odd: preemption latency trace v1.0 ----------------------------- latency: 71 us, entries: 6 (6) process: XFree86/518, uid: 0 nice: -10, policy: 0, rt_priority: 0 =======> 0.000ms (+0.000ms): sched_clock (schedule) 0.000ms (+0.000ms): deactivate_task (schedule) 0.000ms (+0.000ms): dequeue_task (deactivate_task) 0.001ms (+0.000ms): __switch_to (schedule) 0.068ms (+0.066ms): finish_task_switch (schedule) 0.069ms (+0.000ms): check_preempt_timing (sub_preempt_count) Lee