Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2992712AbWJTTQQ (ORCPT ); Fri, 20 Oct 2006 15:16:16 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S2992714AbWJTTQQ (ORCPT ); Fri, 20 Oct 2006 15:16:16 -0400 Received: from smtp.osdl.org ([65.172.181.4]:56772 "EHLO smtp.osdl.org") by vger.kernel.org with ESMTP id S2992712AbWJTTQP (ORCPT ); Fri, 20 Oct 2006 15:16:15 -0400 Date: Fri, 20 Oct 2006 12:15:37 -0700 From: Andrew Morton To: tglx@linutronix.de Cc: teunis , linux-kernel@vger.kernel.org, Dmitry Torokhov , Ingo Molnar Subject: Re: various laptop nagles - any suggestions? (note: 2.6.19-rc2-mm1 but applies to multiple kernels) Message-Id: <20061020121537.dea13469.akpm@osdl.org> In-Reply-To: <1161370015.5274.282.camel@localhost.localdomain> References: <4537A25D.6070205@wintersgift.com> <20061019194157.1ed094b9.akpm@osdl.org> <4538F9AD.8000806@wintersgift.com> <20061020110746.0db17489.akpm@osdl.org> <1161368034.5274.278.camel@localhost.localdomain> <20061020112627.04a4035a.akpm@osdl.org> <1161370015.5274.282.camel@localhost.localdomain> X-Mailer: Sylpheed version 2.2.7 (GTK+ 2.8.6; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1123 Lines: 31 On Fri, 20 Oct 2006 20:46:55 +0200 Thomas Gleixner wrote: > On Fri, 2006-10-20 at 11:26 -0700, Andrew Morton wrote: > > On Fri, 20 Oct 2006 20:13:54 +0200 > > Thomas Gleixner wrote: > > > > > > Also, NO_HZ breaks my laptop (and presumably quite a few others) quite > > > > horridly, which means nobody can ship the feature. Some runtime > > > > turn-it-off work needs to be done there. > > > > > > We can make a commandline switch as for highres. Is that sufficient ? > > > > I doubt it. > > > > I don't know how many machines will be affected by this, but I'd expect > > it's quite a few - the Vaio has a less-than-one-year-old Intel CPU in it. > > Is this still the broken lapic issue ? yup. iirc the standard FC5 SMP kernel runs dog-slowly on that machine too. > I think about a detection > mechanism for that one. Thanks. - 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/