Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262014AbVATA5b (ORCPT ); Wed, 19 Jan 2005 19:57:31 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262015AbVATA5b (ORCPT ); Wed, 19 Jan 2005 19:57:31 -0500 Received: from gprs215-87.eurotel.cz ([160.218.215.87]:35799 "EHLO amd.ucw.cz") by vger.kernel.org with ESMTP id S262014AbVATA5Q (ORCPT ); Wed, 19 Jan 2005 19:57:16 -0500 Date: Thu, 20 Jan 2005 01:44:04 +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: <20050120004404.GA1366@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: 3564 Lines: 101 Hi! > > > 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. Now it seems to work okay, see below. root@amd:~# dmesg | grep -i time; for i in 1 2 3 4 5; do ntpdate -t 10 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 20 Jan 01:39:45 ntpdate[1365]: step time server 195.113.144.238 offset -3.449324 sec 20 Jan 01:40:00 ntpdate[1371]: adjust time server 195.113.144.238 offset 0.005790 sec 20 Jan 01:40:15 ntpdate[1375]: adjust time server 195.113.144.238 offset 0.024061 sec 20 Jan 01:40:31 ntpdate[1380]: adjust time server 195.113.144.238 offset 0.004277 sec 20 Jan 01:40:46 ntpdate[1384]: adjust time server 195.113.144.238 offset 0.000283 sec Thu Jan 20 01:40:56 CET 2005 Thu Jan 20 01:41:06 CET 2005 Thu Jan 20 01:41:06 CET 2005 Thu Jan 20 01:41:07 CET 2005 Thu Jan 20 01:41:08 CET 2005 Thu Jan 20 01:41:09 CET 2005 Thu Jan 20 01:41:10 CET 2005 Thu Jan 20 01:41:11 CET 2005 Timer interrupts are no longer that common, good. root@amd:~# cat /proc/interrupts ; sleep 10; cat /proc/interrupts CPU0 0: 16390 IO-APIC-edge timer 1: 646 IO-APIC-edge i8042 10: 49 IO-APIC-level acpi 12: 69 IO-APIC-edge i8042 14: 1688 IO-APIC-edge ide0 15: 14 IO-APIC-edge ide1 17: 1 IO-APIC-level yenta 19: 2 IO-APIC-level ohci1394 21: 1252 IO-APIC-level ehci_hcd, uhci_hcd, uhci_hcd, uhci_hcd 22: 0 IO-APIC-level VIA8233 23: 3 IO-APIC-level eth0 NMI: 0 LOC: 20306 ERR: 0 MIS: 0 CPU0 0: 16586 IO-APIC-edge timer 1: 647 IO-APIC-edge i8042 10: 49 IO-APIC-level acpi 12: 69 IO-APIC-edge i8042 14: 1744 IO-APIC-edge ide0 15: 14 IO-APIC-edge ide1 17: 1 IO-APIC-level yenta 19: 2 IO-APIC-level ohci1394 21: 1337 IO-APIC-level ehci_hcd, uhci_hcd, uhci_hcd, uhci_hcd 22: 0 IO-APIC-level VIA8233 23: 3 IO-APIC-level eth0 NMI: 0 LOC: 20647 ERR: 0 MIS: 0 Pavel > --- config.orig 2005-01-19 16:05:16.000000000 -0800 > +++ config 2005-01-19 16:06:07.000000000 -0800 > @@ -103,7 +103,7 @@ > CONFIG_X86_GOOD_APIC=y > CONFIG_X86_INTEL_USERCOPY=y > CONFIG_X86_USE_PPRO_CHECKSUM=y > -CONFIG_HPET_TIMER=y > +# CONFIG_HPET_TIMER is not set > CONFIG_NO_IDLE_HZ=y > # CONFIG_SMP is not set > CONFIG_PREEMPT=y > @@ -169,7 +169,7 @@ > CONFIG_ACPI_POWER=y > CONFIG_ACPI_PCI=y > CONFIG_ACPI_SYSTEM=y > -# CONFIG_X86_PM_TIMER is not set > +CONFIG_X86_PM_TIMER=y > # CONFIG_ACPI_CONTAINER is not set > > # -- 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/