From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030667AbXCNGTO (ORCPT ); Wed, 14 Mar 2007 02:19:14 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030683AbXCNGTO (ORCPT ); Wed, 14 Mar 2007 02:19:14 -0400 Received: from holomorphy.com ([66.93.40.71]:37923 "EHLO holomorphy.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1030667AbXCNGTO (ORCPT ); Wed, 14 Mar 2007 02:19:14 -0400 Date: Tue, 13 Mar 2007 23:19:22 -0700 From: William Lee Irwin III To: Gene Heskett Cc: linux-kernel@vger.kernel.org Subject: Re: New thread RDSL, post-2.6.20 kernels and amanda (tar) miss-fires Message-ID: <20070314061922.GR2986@holomorphy.com> References: <200703130428.11014.gene.heskett@gmail.com> <200703132331.56140.gene.heskett@gmail.com> <20070314050721.GP2986@holomorphy.com> <200703140209.58375.gene.heskett@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200703140209.58375.gene.heskett@gmail.com> Organization: The Domain of Holomorphy User-Agent: Mutt/1.5.13 (2006-08-11) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > On Wednesday 14 March 2007, William Lee Irwin III wrote: > >On Tue, Mar 13, 2007 at 11:31:53PM -0400, Gene Heskett wrote: > >> Now, can someone suggest a patch I can revert that might fix this? > >> The total number of patches between 2.6.20 and 2.6.21-rc1 will have me > >> building kernels to bisect this till the middle of June at this rate. > > > >4 billion patches could be bisected in 34 boots. Between 2.6.20 and > >2.6.21-rc1 there are only: > > > >$ git rev-list --no-merges v2.6.20..v2.6.21-rc1 |wc -l > >3118 > > > >patches, requiring 14 boots. In general ceil(log(n)/log(2))+2 boots. > > > >Of course, this is a little optimistic because it assumes no additional > >breakage occurring at the various bisection points. In any event, > >assuming (pessimistically) 10 minutes per build, this is 280 minutes or > >4 hours and 40 minutes of build time. I estimate the process should > >complete well before Friday of this week, never mind June. > On Wed, Mar 14, 2007 at 02:09:57AM -0400, Gene Heskett wrote: > Chuckle, sorry to disappoint you wli, on that 32 cpu Niagra Con was > calling 'poor equipment', maybe. > Even using ccache, its about 15-18 minutes per build, with another 10 to > edit my build script and construct the kernel tree with the proper > patches applied. Then a reboot, probably 10 minutes by the time I get > the nvidia driver installed for the new kernel and get startx'd, then its > another 2 hours or a bit less for an amanda run to test it. 2 hours, 48 minutes times 13 boots (see the correction post) is 36 hours, 24 minutes. One attempt a day (24 hours instead of 2 hours, 48 minutes) yyields 2 weeks. So you're still done by April, not June. -- wli