Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932278AbWJBNDE (ORCPT ); Mon, 2 Oct 2006 09:03:04 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932280AbWJBNDE (ORCPT ); Mon, 2 Oct 2006 09:03:04 -0400 Received: from pool-72-66-199-147.ronkva.east.verizon.net ([72.66.199.147]:4805 "EHLO turing-police.cc.vt.edu") by vger.kernel.org with ESMTP id S932278AbWJBNDC (ORCPT ); Mon, 2 Oct 2006 09:03:02 -0400 Message-Id: <200610021302.k92D23W1003320@turing-police.cc.vt.edu> X-Mailer: exmh version 2.7.2 01/07/2005 with nmh-1.2 To: Thomas Gleixner Cc: Andrew Morton , LKML , Ingo Molnar , Jim Gettys , John Stultz , David Woodhouse , Arjan van de Ven , Dave Jones Subject: Re: [patch 00/21] high resolution timers / dynamic ticks - V2 In-Reply-To: Your message of "Sun, 01 Oct 2006 22:59:01 -0000." <20061001225720.115967000@cruncher.tec.linutronix.de> From: Valdis.Kletnieks@vt.edu References: <20061001225720.115967000@cruncher.tec.linutronix.de> Mime-Version: 1.0 Content-Type: multipart/signed; boundary="==_Exmh_1159794123_2699P"; micalg=pgp-sha1; protocol="application/pgp-signature" Content-Transfer-Encoding: 7bit Date: Mon, 02 Oct 2006 09:02:03 -0400 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1651 Lines: 43 --==_Exmh_1159794123_2699P Content-Type: text/plain; charset=us-ascii On Sun, 01 Oct 2006 22:59:01 -0000, Thomas Gleixner said: > the following patch series is an update in response to your review. First runtime results - no lockups or other severe badness in a half-hour or so of running. -mm2-hrt-dynticks5 shows severe clock drift issues if you run 'cpuspeed'. Using speedstep-ich as a kernel built-in, and cpuspeed is invoked as: cpuspeed -d -n -i 10 -p 10 50 -a /proc/acpi/ac_adapter/*/state If cpuspeed drops the CPU speed from the default 1.6Ghz down to 1.2Ghz (the only 2 speeds available on this core), the system clock proceeds to lose about 15 seconds a minute. I haven't dug further into why yet. (If the system is busy so cpuspeed keeps the processor at 1.6Ghz, the clock doesn't drift as much - so it looks like a "when speed is 1.2Ghz" issue...) I'm also seeing gkrellm reporting about 25% CPU use when "near-idle" (X is up but not much is going on) when that's usually down around 5-6%. I need to collect some oprofile numbers and investigate that as well. --==_Exmh_1159794123_2699P Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (GNU/Linux) Comment: Exmh version 2.5 07/13/2001 iD8DBQFFIQ3LcC3lWbTT17ARAucrAKCXWMB2Z45PAfp0krYYY715bOvylwCg9CIq hStcnGocagt3EJS8jMFnw14= =uKsL -----END PGP SIGNATURE----- --==_Exmh_1159794123_2699P-- - 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/