Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261221AbVEQByI (ORCPT ); Mon, 16 May 2005 21:54:08 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261659AbVEQByH (ORCPT ); Mon, 16 May 2005 21:54:07 -0400 Received: from serv01.siteground.net ([70.85.91.68]:1721 "EHLO serv01.siteground.net") by vger.kernel.org with ESMTP id S261221AbVEQByF (ORCPT ); Mon, 16 May 2005 21:54:05 -0400 Date: Mon, 16 May 2005 17:55:54 -0700 (PDT) From: christoph X-X-Sender: christoph@ScMPusgw To: Lee Revell cc: linux-kernel@vger.kernel.org, shai@scalex86.org, akpm@osdl.org Subject: Re: [PATCH] i386: Selectable Frequency of the Timer Interrupt. In-Reply-To: <1116276689.28764.1.camel@mindpipe> Message-ID: References: <1116276689.28764.1.camel@mindpipe> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - serv01.siteground.net X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [0 0] / [47 12] X-AntiAbuse: Sender Address Domain - scalex86.org X-Source: X-Source-Args: X-Source-Dir: Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 746 Lines: 18 On Mon, 16 May 2005, Lee Revell wrote: > On Mon, 2005-05-16 at 12:45 -0700, christoph wrote: > > Make the timer frequency selectable. The timer interrupt may cause bus > > and memory contention in large NUMA systems since the interrupt occurs > > on each processor HZ times per second. > > Isn't there already a patch in the -ac kernel that allows HZ to be > selected at runtime? Runtime? That seems to be a bad idea. It would be better to rewrite the timer subsystem to be able to work tickless. - 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/