Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932868AbXHFO2z (ORCPT ); Mon, 6 Aug 2007 10:28:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932144AbXHFO2o (ORCPT ); Mon, 6 Aug 2007 10:28:44 -0400 Received: from sovereign.computergmbh.de ([85.214.69.204]:42293 "EHLO sovereign.computergmbh.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1762820AbXHFO2n (ORCPT ); Mon, 6 Aug 2007 10:28:43 -0400 Date: Mon, 6 Aug 2007 16:28:42 +0200 (CEST) From: Jan Engelhardt To: Chris Snook cc: Linux Kernel Mailing List Subject: Re: Few interrupts with NO_HZ In-Reply-To: <46B72688.8070303@redhat.com> Message-ID: References: <46B72688.8070303@redhat.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 930 Lines: 28 On Aug 6 2007 09:47, Chris Snook wrote: >> >> this more of an informational question. So: >> kernel version is 2.6.22.1 on i686 >> /proc/uptime 9917.81 9140.90 (2h45m) >> /proc/cpuinfo: >> CPU0 >> 0: 282 IO-APIC-edge timer >> >> this is kinda neat, I expected much more interrupts than just 282 >> since boot. What kernel code actually uses the irq0 timer? > > If you don't have an HPET (and most single-processor systems do not) This is an AMD Athlon with 'Thoroughbred' core; it does not seem to have C-states at all (or: exactly one). It clearly is not idle all the time, sometimes I run povray. (And 282 has not changed since the morning.) Jan -- - 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/