Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2992771AbWJUBZx (ORCPT ); Fri, 20 Oct 2006 21:25:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030380AbWJUBZx (ORCPT ); Fri, 20 Oct 2006 21:25:53 -0400 Received: from smtp.osdl.org ([65.172.181.4]:50614 "EHLO smtp.osdl.org") by vger.kernel.org with ESMTP id S1030379AbWJUBZw (ORCPT ); Fri, 20 Oct 2006 21:25:52 -0400 Date: Fri, 20 Oct 2006 18:25:27 -0700 From: Andrew Morton To: Ingo Molnar Cc: tglx@linutronix.de, teunis , linux-kernel@vger.kernel.org, Dmitry Torokhov , john stultz Subject: Re: various laptop nagles - any suggestions? (note: 2.6.19-rc2-mm1 but applies to multiple kernels) Message-Id: <20061020182527.a07666a4.akpm@osdl.org> In-Reply-To: <20061020205651.GA26801@elte.hu> 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> <20061020121537.dea13469.akpm@osdl.org> <20061020203731.GA22407@elte.hu> <20061020135450.6794a2bb.akpm@osdl.org> <20061020205651.GA26801@elte.hu> X-Mailer: Sylpheed version 2.2.7 (GTK+ 2.8.17; x86_64-unknown-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: 1706 Lines: 60 On Fri, 20 Oct 2006 22:56:51 +0200 Ingo Molnar wrote: > > * Andrew Morton wrote: > > > Oh. I thought the problem was that the timer stops when the CPU is > > idle. Maybe I misremembered. I'll try `idle=poll'. > > hm, wouldnt in that case the box not boot at all? But yeah, idle=poll > would be nice. idle=poll fixes it. The fan gets a bit noisy though ;) Perhaps a suitable test would be to set up a PIT interrupt, do a hlt, see if the APIC timer counter has increased appropriately. I got this: [ 43.709238] TSC appears to be running slowly. Marking it as unstable How come? It also happens with HIGH_RES_TIMERS=n and NO_HZ=n. It only seems to happen when idle=poll is given. > could you also boot with apic=verbose and send us the full bootlog? > http://userweb.kernel.org/~akpm/apic.txt I gave up on waiting for it to complete initscripts. processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 13 model name : Intel(R) Pentium(R) M processor 2.00GHz stepping : 8 cpu MHz : 800.000 cache size : 2048 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss tm pbe nx est tm2 bogomips : 3994.15 - 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/