Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S268213AbUJHSVo (ORCPT ); Fri, 8 Oct 2004 14:21:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S270080AbUJHSUn (ORCPT ); Fri, 8 Oct 2004 14:20:43 -0400 Received: from viper.oldcity.dca.net ([216.158.38.4]:60857 "HELO viper.oldcity.dca.net") by vger.kernel.org with SMTP id S268213AbUJHSF2 (ORCPT ); Fri, 8 Oct 2004 14:05:28 -0400 Subject: Re: [patch] voluntary-preempt-2.6.9-rc3-mm3-T3 From: Lee Revell To: Con Kolivas Cc: Rui Nuno Capela , Ingo Molnar , linux-kernel , "K.R. Foley" , Florian Schmidt , mark_h_johnson@raytheon.com, Fernando Pablo Lopez-Lezcano In-Reply-To: <4166386F.7050504@kolivas.org> References: <20040921071854.GA7604@elte.hu> <20040921074426.GA10477@elte.hu> <20040922103340.GA9683@elte.hu> <20040923122838.GA9252@elte.hu> <20040923211206.GA2366@elte.hu> <20040924074416.GA17924@elte.hu> <20040928000516.GA3096@elte.hu> <20041003210926.GA1267@elte.hu> <20041004215315.GA17707@elte.hu> <20041005134707.GA32033@elte.hu> <20041007105230.GA17411@elte.hu> <56697.195.245.190.93.1097157219.squirrel@195.245.190.93> <32798.192.168.1.5.1097191570.squirrel@192.168.1.5> <1097213813.1442.2.camel@krustophenia.net> <4166386F.7050504@kolivas.org> Content-Type: text/plain Message-Id: <1097258722.1442.18.camel@krustophenia.net> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 Date: Fri, 08 Oct 2004 14:05:22 -0400 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1509 Lines: 38 On Fri, 2004-10-08 at 02:49, Con Kolivas wrote: > Lee Revell wrote: > > On Thu, 2004-10-07 at 19:26, Rui Nuno Capela wrote: > > > >>Ingo Molnar wrote: > >> > >>>>i've released the -T3 VP patch: > >>>> http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc3-mm3-T3 > >>>> > >>> > >>OK. Just to let you know, both of my personal machines are now running on > >>bleeding-edge 2.6.9-rc3-mm3-T3, and very happily may I assure :) > > > > > > This actually feels a _lot_ snappier than mm2, which seemed prone to > > weird stalls. I don't have any numbers to back this up yet. > > mm2 had a completely different cpu scheduler so no meaningful comparison > can be made. Try comparing to mm3 vanilla. Well, I figured the change from -mm2 to -mm3 was responsible, as I have never seen the VP patches make a perceptible difference in system response time. The VP effect only becomes apparent when you do something that really needs millisecond or sub-ms latency. I guess a bug in the VP patch could cause performance regressions though. However no one reported sluggishness with mm2+S7, but it's apparent when you try mm3+T3 that it feels a lot more responsive. Anyway I was just wondering if there was an obvious change that would cause this. Lee - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/