Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262241AbUKQPIp (ORCPT ); Wed, 17 Nov 2004 10:08:45 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262339AbUKQPIp (ORCPT ); Wed, 17 Nov 2004 10:08:45 -0500 Received: from fmr14.intel.com ([192.55.52.68]:29630 "EHLO fmsfmr002.fm.intel.com") by vger.kernel.org with ESMTP id S262241AbUKQPIl convert rfc822-to-8bit (ORCPT ); Wed, 17 Nov 2004 10:08:41 -0500 X-MimeOLE: Produced By Microsoft Exchange V6.5.7226.0 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT Subject: RE: [patch] prefer TSC over PM Timer Date: Wed, 17 Nov 2004 07:08:27 -0800 Message-ID: <88056F38E9E48644A0F562A38C64FB60035C6850@scsmsx403.amr.corp.intel.com> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [patch] prefer TSC over PM Timer Thread-Index: AcTMsIMhf01sgb1jQdefWEkVtLSi8gABbkAg From: "Pallipadi, Venkatesh" To: , "dean gaudet" Cc: "john stultz" , "lkml" X-OriginalArrivalTime: 17 Nov 2004 15:08:29.0587 (UTC) FILETIME=[4BCAA630:01C4CCB7] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1018 Lines: 31 >-----Original Message----- >From: Dmitry Torokhov [mailto:dmitry.torokhov@gmail.com] >Sent: Wednesday, November 17, 2004 6:20 AM >To: dean gaudet >Cc: Pallipadi, Venkatesh; john stultz; lkml >Subject: Re: [patch] prefer TSC over PM Timer > >On Tue, 16 Nov 2004 17:50:42 -0800 (PST), dean gaudet > wrote: >> on a tangent... has the local apic timer ever been >considered? it's fixed >> rate, and my measurements show it in the same performance >ballpark as TSC. >> > >At least Dell laptops will die horrible death if you enable lapic, >probably others. > Hmm... And local APIC timer comes with its own set of problems http://bugme.osdl.org/show_bug.cgi?id=2560 While in C3, we don't get local APIC timer interrupts. Thanks, Venki - 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/