From owner-freebsd-arch@FreeBSD.ORG Thu Nov 4 08:44:48 2004 Return-Path: Delivered-To: freebsd-arch@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 871A516A4D5 for ; Thu, 4 Nov 2004 08:44:48 +0000 (GMT) Received: from critter.freebsd.dk (critter.freebsd.dk [212.242.86.163]) by mx1.FreeBSD.org (Postfix) with ESMTP id AAE9C43D41 for ; Thu, 4 Nov 2004 08:44:47 +0000 (GMT) (envelope-from phk@critter.freebsd.dk) Received: from critter.freebsd.dk (localhost [127.0.0.1]) by critter.freebsd.dk (8.13.1/8.13.1) with ESMTP id iA48ijA5039211 for ; Thu, 4 Nov 2004 09:44:45 +0100 (CET) (envelope-from phk@critter.freebsd.dk) To: arch@freebsd.org From: Poul-Henning Kamp Date: Thu, 04 Nov 2004 09:44:45 +0100 Message-ID: <39210.1099557885@critter.freebsd.dk> Sender: phk@critter.freebsd.dk Subject: HEADSUP: HZ=1000 by default on i386 X-BeenThere: freebsd-arch@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussion related to FreeBSD architecture List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 04 Nov 2004 08:44:48 -0000 We increasingly need better granularity in our sleep/wakeup calls and things like device polling and trafic shaping needs higher granularity in particular. So pending any really good arguments to the contrary I plan to increase HZ to 1000 on i386 this weekend. You can still define any HZ value you like in your kernel config file or even set it from the loader. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.