Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758127AbYHNJBT (ORCPT ); Thu, 14 Aug 2008 05:01:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754074AbYHNJBI (ORCPT ); Thu, 14 Aug 2008 05:01:08 -0400 Received: from www.tglx.de ([62.245.132.106]:60936 "EHLO www.tglx.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754041AbYHNJBH (ORCPT ); Thu, 14 Aug 2008 05:01:07 -0400 Date: Thu, 14 Aug 2008 11:00:58 +0200 (CEST) From: Thomas Gleixner To: Milan Plzik cc: "Pallipadi, Venkatesh" , "linux-kernel@vger.kernel.org" Subject: RE: Possible CPU_IDLE bug [WAS: Re: Timer unstability on when using C2 and deeper sleep states (Dell Latitude XT)] In-Reply-To: <1218701151.4285.9.camel@localhost> Message-ID: References: <1218566008.13866.41.camel@localhost> <1218625125.4304.7.camel@localhost> <1218636980.5250.12.camel@localhost> <7E82351C108FA840AB1866AC776AEC460945BB44@orsmsx505.amr.corp.intel.com> <1218658873.4336.15.camel@localhost> <7E82351C108FA840AB1866AC776AEC460945BFF2@orsmsx505.amr.corp.intel.com> <1218701151.4285.9.camel@localhost> User-Agent: Alpine 1.10 (LFD 962 2008-03-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 972 Lines: 21 On Thu, 14 Aug 2008, Milan Plzik wrote: > I tried it just now, is performs a bit better than 2.6.26 (e.g. I > don't get that "press any key unless nothing happens" states), even > reports a bit more reasonable values of wakeups, but the system > sometimes becomes rather slow (e.g. when playing video). I was not able > to compile fglrx driver, so I had to change it to radeon one. And also, > the number of wakeups reported is not very convincing, though, it > changes from 300 to 600 (which is ~ two times the sum of wakeups) > without any reason, and sometimes goes even higher. > > I tried to use nolapic_timer option, but it didn't help. Can you please try "hpet=disable" on the kernel command line ? Thanks, tglx -- 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/