Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754559Ab0H3ID6 (ORCPT ); Mon, 30 Aug 2010 04:03:58 -0400 Received: from mail-vw0-f46.google.com ([209.85.212.46]:38898 "EHLO mail-vw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754330Ab0H3IDz (ORCPT ); Mon, 30 Aug 2010 04:03:55 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type; b=AZt5bz+87qPi40EHR5dRTFB9ABggAABvmFs+8jcGTNP26rzjcdnctdEveBsAEz2KYu E2eKQU1TglyqR+jBnzww1KIzFgWaL4UCOsgXg53FrX/oG9cQtWdsbvhc+qzFszydFcHf rs3lrSPjBUkxsDgiotMSfF08UXiCTNF1h7e8A= MIME-Version: 1.0 In-Reply-To: <1282957741.1946.27.camel@work-vm> References: <1282932708.1946.8.camel@work-vm> <1282957741.1946.27.camel@work-vm> Date: Mon, 30 Aug 2010 10:03:53 +0200 X-Google-Sender-Auth: 4_xQuDWzq91MFBBqSEx5Onb4nME Message-ID: Subject: Re: System time drifts when processor idle. From: jean-philippe francois To: john stultz Cc: Venkatesh Pallipadi , Lin Ming , "H. Peter Anvin" , linux-acpi@vger.kernel.org, LKML , jslaby@suse.cz Content-Type: multipart/mixed; boundary=0016e64cad1ecf161e048f05e7ec Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 7160 Lines: 109 --0016e64cad1ecf161e048f05e7ec Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable > > jean-philippe: Is the drift always in 5 minute increments? Can you leave > it idle for 3 minutes and see a similar 3 minute delay, or is it always > in units of 5 ? > It looks like it is always a 5 minute delay, or sometimes 10. Attached is an edited version with the interesting bits of a test running for 8 hours Jean-Philippe Fran=E7ois --0016e64cad1ecf161e048f05e7ec Content-Type: text/x-log; charset=UTF-8; name="longrun_edited.log" Content-Disposition: attachment; filename="longrun_edited.log" Content-Transfer-Encoding: base64 X-Attachment-Id: f_gdh1lhuw0 TGludXgganAgMi42LjM2LTAyMDYzNnJjMS1nZW5lcmljICMyMDEwMDgxNzEzMDYgU01QIFR1ZSBB dWcgMTcgMTQ6MTY6MjggVVRDIDIwMTAgaTY4NiBHTlUvTGludXgKY2F0IC9zeXMvZGV2aWNlcy9z eXN0ZW0vY2xvY2tzb3VyY2UvY2xvY2tzb3VyY2UwL2F2YWlsYWJsZV9jbG9ja3NvdXJjZQpocGV0 IGFjcGlfcG0gCmNhdCAvc3lzL2RldmljZXMvc3lzdGVtL2Nsb2Nrc291cmNlL2Nsb2Nrc291cmNl MC9jdXJyZW50X2Nsb2Nrc291cmNlCmhwZXQKX19fX19fX19fX19fX19fX19fX19fX19fCiAgc3lz dGVtIHwgaGFyZHdhcmUoUlRDKQoxNDo0Nzo0NSB8IHNhbS4gMjggYW/Du3QgMjAxMCAxNDo0Nzo0 NiBDRVNUICAtMC41MDA1NTUgc2Vjb25kZXMKMTQ6NDg6MDYgfCBzYW0uIDI4IGFvw7t0IDIwMTAg MTQ6NDg6MDcgQ0VTVCAgLTAuOTcwMzYyIHNlY29uZGVzCgouLi4KCjE0OjU5OjE4IHwgc2FtLiAy 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