Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261693AbVASLco (ORCPT ); Wed, 19 Jan 2005 06:32:44 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261694AbVASLcc (ORCPT ); Wed, 19 Jan 2005 06:32:32 -0500 Received: from gprs215-131.eurotel.cz ([160.218.215.131]:56481 "EHLO amd.ucw.cz") by vger.kernel.org with ESMTP id S261693AbVASLcZ (ORCPT ); Wed, 19 Jan 2005 06:32:25 -0500 Date: Wed, 19 Jan 2005 12:36:43 +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: <20050119113642.GA1358@elf.ucw.cz> References: <20050119000556.GB14749@atomide.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20050119000556.GB14749@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: 2120 Lines: 63 Hi! > As this patch is related to the VST/High-Res timers, there > are probably various things that can be merged. I have not > yet looked at what all could be merged. > > I'd appreciate some comments and testing! Good news is that it does seem to reduce number of interrupts. Bad news is that time now runs faster (like "sleep 10" finishes in ~5 seconds) and that I could not measure any difference in power consumption. Pavel root@amd:~# date; cat /proc/interrupts ; sleep 10; date; cat /proc/interrupts Wed Jan 19 12:30:46 CET 2005 CPU0 0: 18136 IO-APIC-edge timer 1: 557 IO-APIC-edge i8042 10: 148 IO-APIC-level acpi 12: 69 IO-APIC-edge i8042 14: 1587 IO-APIC-edge ide0 15: 14 IO-APIC-edge ide1 17: 1 IO-APIC-level yenta 19: 2 IO-APIC-level ohci1394 21: 0 IO-APIC-level ehci_hcd, uhci_hcd, uhci_hcd, uhci_hcd 22: 0 IO-APIC-level VIA8233 23: 0 IO-APIC-level eth0 NMI: 0 LOC: 20924 ERR: 0 MIS: 0 Wed Jan 19 12:30:56 CET 2005 CPU0 0: 18253 IO-APIC-edge timer 1: 558 IO-APIC-edge i8042 10: 148 IO-APIC-level acpi 12: 69 IO-APIC-edge i8042 14: 1587 IO-APIC-edge ide0 15: 14 IO-APIC-edge ide1 17: 1 IO-APIC-level yenta 19: 2 IO-APIC-level ohci1394 21: 0 IO-APIC-level ehci_hcd, uhci_hcd, uhci_hcd, uhci_hcd 22: 0 IO-APIC-level VIA8233 23: 0 IO-APIC-level eth0 NMI: 0 LOC: 21062 ERR: 0 MIS: 0 root@amd:~# (But it really took somewhere around 5 seconds). 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/