From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753788AbZELTpl (ORCPT ); Tue, 12 May 2009 15:45:41 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752185AbZELTpc (ORCPT ); Tue, 12 May 2009 15:45:32 -0400 Received: from fmmailgate05.web.de ([217.72.192.243]:62179 "EHLO fmmailgate05.web.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751991AbZELTpc convert rfc822-to-8bit (ORCPT ); Tue, 12 May 2009 15:45:32 -0400 Date: Tue, 12 May 2009 21:45:31 +0200 Message-Id: <711906814@web.de> MIME-Version: 1.0 From: devzero@web.de To: Alan Cox Cc: Alok Kataria , linux-kernel@vger.kernel.org Subject: Re: [PATCH] x86: Reduce the default HZ value Organization: http://freemail.web.de/ X-Provags-Id: V01U2FsdGVkX19eo5mpcPCPIDxAd2KY5KWYy2UUdc0upD8VoZ4fGK0DgUH9d CVUUXX2NMEe96NlHc12ti3U5XnhEZaq87sCnIIlvfeqSzkgTqM= Content-Type: text/plain; charset=iso-8859-15 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org >> > As a side note Red Hat ships runtime configurable tick behaviour in RHEL >> > these days. HZ is fixed but the ticks can be bunched up. That was done as >> > a quick fix to keep stuff portable but its a lot more sensible than >> > randomly messing with the HZ value and its not much code either. >> > >> Hi Alan, >> >> I guess you are talking about the tick_divider patch ? >> And that's still same as reducing the HZ value only that it can be done >> dynamically (boot time), right ? > >Yes - which has the advantage that you can select different behaviours >rather than distributions having to build with HZ=1000 either for >compatibility or responsiveness can still allow users to drop to a lower >HZ value if doing stuff like HPC. > >Basically it removes the need to argue about it at build time and lets >the user decide. any reason why this did not reach mainline? is it because there were issues with clocksource=pit ? regards roland ______________________________________________________ GRATIS für alle WEB.DE-Nutzer: Die maxdome Movie-FLAT! Jetzt freischalten unter http://movieflat.web.de