From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750791AbWFUE4k (ORCPT ); Wed, 21 Jun 2006 00:56:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750973AbWFUE4k (ORCPT ); Wed, 21 Jun 2006 00:56:40 -0400 Received: from mail06.syd.optusnet.com.au ([211.29.132.187]:61165 "EHLO mail06.syd.optusnet.com.au") by vger.kernel.org with ESMTP id S1750791AbWFUE4j (ORCPT ); Wed, 21 Jun 2006 00:56:39 -0400 From: Con Kolivas To: Jan Engelhardt Subject: Re: [ckpatch][15/29] hz-no_default_250.patch Date: Wed, 21 Jun 2006 14:53:09 +1000 User-Agent: KMail/1.9.1 Cc: Albert Cahalan , linux-kernel@vger.kernel.org References: <787b0d920606181752j4b7c7309t9c0ab9bf8da1537a@mail.gmail.com> <200606191125.50826.kernel@kolivas.org> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200606211453.10239.kernel@kolivas.org> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Monday 19 June 2006 21:52, Jan Engelhardt wrote: > >Yes I stored a family of these values and 864 was ~ the optimum for a high > >value for desktops and ~84 for a low value but were unpopular for not > > being > > 82 IIRC. Ah yes here it is HZ ticks/jiffie 1 second error (ppm) --------------------------------------------------- 82 14551 1.000000152 0.2 96 12429 1.000001829 1.8 209 5709 0.999999314 -0.7 363 3287 0.999999314 -0.7 519 2299 0.999999314 -0.7 864 1381 1.000001829 1.8 > > >something decimally familiar. Also lots of code kind of broke with values > >below 100 in the kernel. > > Ought to be fixed. Just like the code which assumed 100 Hz and broke during > the initial switch to 1000, before we went back again to 250. :p No impetus to fix them I guess since there is no way to configure the kernel for sub 100 HZ configs without hacking it. -- -ck