From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752261AbVHGQTG (ORCPT ); Sun, 7 Aug 2005 12:19:06 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752262AbVHGQTG (ORCPT ); Sun, 7 Aug 2005 12:19:06 -0400 Received: from mx1.suse.de ([195.135.220.2]:20156 "EHLO mx1.suse.de") by vger.kernel.org with ESMTP id S1752260AbVHGQTF (ORCPT ); Sun, 7 Aug 2005 12:19:05 -0400 Date: Sun, 7 Aug 2005 18:19:02 +0200 From: Andi Kleen To: Parag Warudkar Cc: Andi Kleen , Erick Turnquist , linux-kernel@vger.kernel.org Subject: Re: Lost Ticks on x86_64 Message-ID: <20050807161902.GX8266@wotan.suse.de> References: <080720051429.26355.42F61ABC0005F4BA000066F3220699849900009A9B9CD3040A029D0A05@comcast.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <080720051429.26355.42F61ABC0005F4BA000066F3220699849900009A9B9CD3040A029D0A05@comcast.net> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Aug 07, 2005 at 02:29:16PM +0000, Parag Warudkar wrote: > > No way to fix this, but you can work around it with very new kernels > > by compiling with a lower HZ than 1000. > > John Stultz's timeofday patches seem to fix this lost ticks issue. You might want to try them. > > (I too, routinely get "lost ticks - rip is at acpi_processor_idle" messages which vanished during the period when I was trying John's patches.) They will just hide the problem in this case. -Andi