Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261493AbVDNNAo (ORCPT ); Thu, 14 Apr 2005 09:00:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261495AbVDNNAn (ORCPT ); Thu, 14 Apr 2005 09:00:43 -0400 Received: from atrey.karlin.mff.cuni.cz ([195.113.31.123]:5015 "EHLO atrey.karlin.mff.cuni.cz") by vger.kernel.org with ESMTP id S261493AbVDNNAh (ORCPT ); Thu, 14 Apr 2005 09:00:37 -0400 Date: Sat, 9 Apr 2005 11:56:08 +0200 From: Pavel Machek To: Tony Lindgren Cc: Frank Sorenson , linux-kernel@vger.kernel.org, Benjamin Herrenschmidt , Arjan van de Ven , Martin Schwidefsky , Andrea Arcangeli , George Anzinger , Thomas Gleixner , john stultz , Zwane Mwaikambo , Lee Revell , Thomas Renninger Subject: Re: [PATCH] Updated: Dynamic Tick version 050408-1 Message-ID: <20050409095608.GA5158@openzaurus.ucw.cz> References: <20050406083000.GA8658@atomide.com> <425451A0.7020000@tuxrocks.com> <20050407082136.GF13475@atomide.com> <4255A7AF.8050802@tuxrocks.com> <4255B247.4080906@tuxrocks.com> <20050408062537.GB4477@atomide.com> <20050408075001.GC4477@atomide.com> <20050408102854.GB1392@elf.ucw.cz> <20050408105411.GH4477@atomide.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20050408105411.GH4477@atomide.com> User-Agent: Mutt/1.3.27i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1308 Lines: 32 Hi! > > > > I think I have an idea on what's going on; Your system does not wake to > > > > APIC interrupt, and the system timer updates time only on other interrupts. > > > > I'm experiencing the same on a loaner ThinkPad T30. > > > > > > > > I'll try to do another patch today. Meanwhile it now should work > > > > without lapic in cmdline. > > > > > > Following is an updated patch. Anybody having trouble, please try > > > disabling CONFIG_DYN_TICK_USE_APIC Kconfig option. > > > > > > I'm hoping this might work on Pavel's machine too? > > > > The "volume hang" was explained: I was using CPU frequency scaling, it > > probably did not like that. After disabling CPU frequency scaling, it > > seems to work ok: > > OK, good. I assume this was the same machine that did not work with > any of the earlier patches I did testing on that machine today, and yes it works okay if I disable the NO_IDLE_HZ_USE_APIC (or how is it called) option. Time problems are gone. Pavel -- 64 bytes from 195.113.31.123: icmp_seq=28 ttl=51 time=448769.1 ms - 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/