Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752443AbYAONyk (ORCPT ); Tue, 15 Jan 2008 08:54:40 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751267AbYAONya (ORCPT ); Tue, 15 Jan 2008 08:54:30 -0500 Received: from usermail.globalproof.net ([194.146.153.18]:38331 "EHLO usermail.globalproof.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750752AbYAONy3 (ORCPT ); Tue, 15 Jan 2008 08:54:29 -0500 From: "Denys Fedoryshchenko" To: Andrew Morton Cc: linux-kernel@vger.kernel.org, Ingo Molnar , Thomas Gleixner Subject: Re: TSC && HPET calibration Date: Tue, 15 Jan 2008 15:54:12 +0200 Message-Id: <20080115135318.M68697@visp.net.lb> In-Reply-To: <20080115021720.ad71605f.akpm@linux-foundation.org> References: <20080110123612.M81049@visp.net.lb> <20080115021720.ad71605f.akpm@linux-foundation.org> X-Mailer: OpenWebMail 2.52 20060502 X-OriginatingIP: 195.69.208.251 (denys@visp.net.lb) MIME-Version: 1.0 Content-Type: text/plain; charset=koi8-r Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1865 Lines: 56 Latest, 2.6.24-rc7, and 2.6.23 is the same. If more information required, tell me. It is btw not latest (not based on Core2) Xeon. On Tue, 15 Jan 2008 02:17:20 -0800, Andrew Morton wrote > On Thu, 10 Jan 2008 14:36:12 +0200 "Denys Fedoryshchenko" > wrote: > > > Hi > > > > I have same issue, but it's never passed synchronization. > > > > Jan 10 12:59:44 visp-1 Time: tsc clocksource has been installed. > > Jan 10 13:41:51 visp-1 ACPI: HPET 000F29CD, 0038 (r1 DELL PE_SC3 1 > > DELL 1) > > Jan 10 13:41:51 visp-1 ACPI: HPET id: 0x8086a201 base: 0xfed00000 > > Jan 10 13:41:51 visp-1 hpet clockevent registered > > Jan 10 13:41:51 visp-1 checking TSC synchronization [CPU#0 -> CPU#1]: passed. > > Jan 10 13:41:51 visp-1 checking TSC synchronization [CPU#0 -> CPU#2]: > > Jan 10 13:41:51 visp-1 Measured 1020 cycles TSC warp between CPUs, turning > > off TSC clock. > > Jan 10 13:41:51 visp-1 Marking TSC unstable due to: check_tsc_sync_source > > failed. > > Jan 10 13:41:51 visp-1 hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0 > > Jan 10 13:41:51 visp-1 hpet0: 3 64-bit timers, 14318180 Hz > > Jan 10 13:41:51 visp-1 Time: hpet clocksource has been installed. > > > > grep Measures > > Sep 19 14:31:28 visp-1 Measured 1044 cycles TSC warp between CPUs, turning > > off TSC clock. > > Sep 19 18:22:46 visp-1 Measured 996 cycles TSC warp between CPUs, turning off > > TSC clock. > > Sep 19 18:35:44 visp-1 Measured 1080 cycles TSC warp between CPUs, turning > > off TSC clock. > > Which kernel version? -- Denys Fedoryshchenko Technical Manager Virtual ISP S.A.L. -- 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/