From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262740AbTLLXSw (ORCPT ); Fri, 12 Dec 2003 18:18:52 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262758AbTLLXSw (ORCPT ); Fri, 12 Dec 2003 18:18:52 -0500 Received: from main.gmane.org ([80.91.224.249]:54953 "EHLO main.gmane.org") by vger.kernel.org with ESMTP id S262740AbTLLXSu (ORCPT ); Fri, 12 Dec 2003 18:18:50 -0500 X-Injected-Via-Gmane: http://gmane.org/ To: linux-kernel@vger.kernel.org From: mru@kth.se (=?iso-8859-1?q?M=E5ns_Rullg=E5rd?=) Subject: Re: Increasing HZ (patch for HZ > 1000) Date: Sat, 13 Dec 2003 00:18:48 +0100 Message-ID: References: <1071126929.5149.24.camel@idefix.homelinux.org> <1293500000.1071127099@[10.10.2.4]> <20031212220853.GA314@elf.ucw.cz> <1071269849.4182.14.camel@idefix.homelinux.org> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Complaints-To: usenet@sea.gmane.org User-Agent: Gnus/5.1002 (Gnus v5.10.2) XEmacs/21.4 (Rational FORTRAN, linux) Cancel-Lock: sha1:4cxYlqPBVzcVKnjt1S7faDQMefw= Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Jean-Marc Valin writes: > more sensitive at 1 kHz). Also, I have around 10% overhead on my > Pentium-M 1.6 GHz, so I guess it's not for everyone. Extrapolating from > there, I'd also say that at 100 kHz, it wouldn't do anything but handle > the interrupts, which is slightly annoying when you want to actually get > some work done :) I once forgot to acknowledge an interrupt in the handler for a PCI board. It ended up being called ~300k times per second. The system load was noticeable. -- Måns Rullgård mru@kth.se