Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262013AbVATA5K (ORCPT ); Wed, 19 Jan 2005 19:57:10 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262015AbVATA5K (ORCPT ); Wed, 19 Jan 2005 19:57:10 -0500 Received: from gprs215-87.eurotel.cz ([160.218.215.87]:35543 "EHLO amd.ucw.cz") by vger.kernel.org with ESMTP id S262013AbVATA5G (ORCPT ); Wed, 19 Jan 2005 19:57:06 -0500 Date: Thu, 20 Jan 2005 01:54:52 +0100 From: Pavel Machek To: Tony Lindgren Cc: George Anzinger , john stultz , Andrea Arcangeli , Zwane Mwaikambo , Con Kolivas , Martin Schwidefsky , linux-kernel@vger.kernel.org Subject: Re: [PATCH] dynamic tick patch Message-ID: <20050120005451.GA1344@elf.ucw.cz> References: <20050119000556.GB14749@atomide.com> <20050119113642.GA1358@elf.ucw.cz> <20050119171106.GA14545@atomide.com> <20050119220637.GA7513@elf.ucw.cz> <20050119230813.GI14545@atomide.com> <20050119235905.GA1371@elf.ucw.cz> <20050120000755.GD9975@atomide.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20050120000755.GD9975@atomide.com> X-Warning: Reading this can be dangerous to your mental health. User-Agent: Mutt/1.5.6+20040907i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1738 Lines: 38 Hi! > > > > > Thanks for trying it out. I have quite accurate time here on my > > > > > systems, and sleep works as it should. I wonder what's happening on > > > > > your system? If you have a chance, could you please post the results > > > > > from following simple tests? > > > > > > > > On patched 2.6.11-rc1: > > > > > > > > [Heh, clock is two times too fast, perhaps that makes ntpdate fail? -- yes. > > > > > > > > root@amd:~# dmesg | grep -i time; for i in 1 2 3 4 5; do ntpdate -b tak.cesnet.cz && sleep 10; done ; date && sleep 10 && date; while [ 1 ]; do date; done | uniq > > > > PCI: Setting latency timer of device 0000:00:11.5 to 64 > > > > dyn-tick: Enabling dynamic tick timer > > > > dyn-tick: Timer using dynamic tick > > > > > > Thanks. Looks like you're running on PIT only, I guess my patch > > > currently breaks PIT (and possibly HPET) No dmesg message for " > > > "Using XXX for high-res timesource". > > > > This machine definitely has TSC... What do I have to do in .config to > > make it do something interesting? My .config is: > > I suspect it's the HPET_TIMER, see below. CONFIG_X86_PM_TIMER is > optional, otherwise TSC is used. Okay, so I tried to measure power consumption. Patched kernel seems to be about 200mW better. That's on 22W... I'll see if I can tweak ACPI somehow to decrease it a bit more. Pavel -- People were complaining that M$ turns users into beta-testers... ...jr ghea gurz vagb qrirybcref, naq gurl frrz gb yvxr vg gung jnl! - 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/