From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262237AbVF2JQ3 (ORCPT ); Wed, 29 Jun 2005 05:16:29 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262288AbVF2JQ3 (ORCPT ); Wed, 29 Jun 2005 05:16:29 -0400 Received: from unused.mind.net ([69.9.134.98]:11910 "EHLO echo.lysdexia.org") by vger.kernel.org with ESMTP id S262237AbVF2JQ0 (ORCPT ); Wed, 29 Jun 2005 05:16:26 -0400 Date: Wed, 29 Jun 2005 02:15:02 -0700 (PDT) From: William Weston X-X-Sender: weston@echo.lysdexia.org To: Ingo Molnar cc: Karsten Wiese , linux-kernel@vger.kernel.org Subject: Re: Real-Time Preemption, -RT-2.6.12-final-V0.7.50-24 In-Reply-To: <20050629070058.GA15987@elte.hu> Message-ID: References: <200506281927.43959.annabellesgarden@yahoo.de> <20050628202147.GA30862@elte.hu> <20050628203017.GA371@elte.hu> <200506290151.53675.annabellesgarden@yahoo.de> <20050629063439.GB12536@elte.hu> <20050629070058.GA15987@elte.hu> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 29 Jun 2005, Ingo Molnar wrote: > > [...] but i think i'm going to revert that, it's causing too many > > problems all around. > > reverted it and this enabled the removal of the extra ->disable() you > noticed - this should further speed up the IOAPIC code. These changes > are in the -50-34 kernel i just uploaded. -50-34 fixed the wakeup latency regression I was seeing on my Athlon box with -50-33, and seems a bit more responsive than -50-25. Max wakeup latency is back down to 14us (from 39us), even while running JACK (xrun free) and two instances of burnK7. Overall system response is probably the best I've seen with the RT kernels ;-} --ww