From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752670AbXDIER4 (ORCPT ); Mon, 9 Apr 2007 00:17:56 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752662AbXDIER4 (ORCPT ); Mon, 9 Apr 2007 00:17:56 -0400 Received: from mail.gmx.net ([213.165.64.20]:50510 "HELO mail.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1752670AbXDIERz (ORCPT ); Mon, 9 Apr 2007 00:17:55 -0400 X-Authenticated: #14349625 X-Provags-ID: V01U2FsdGVkX18/9ClWxMk/nP5UtaGZZjtCbk6J3uYW+mlVCV0QjO e1KpLtZU6aPY3b Subject: Re: Ten percent test From: Mike Galbraith To: Gene Heskett Cc: linux-kernel@vger.kernel.org, Ingo Molnar , Con Kolivas , Andrew Morton , ck list In-Reply-To: <200704081356.48843.gene.heskett@gmail.com> References: <200703290237.38777.kernel@kolivas.org> <200704080733.39303.gene.heskett@gmail.com> <1176032450.6304.3.camel@Homer.simpson.net> <200704081356.48843.gene.heskett@gmail.com> Content-Type: text/plain Date: Mon, 09 Apr 2007 06:17:51 +0200 Message-Id: <1176092271.6355.16.camel@Homer.simpson.net> Mime-Version: 1.0 X-Mailer: Evolution 2.8.2 Content-Transfer-Encoding: 7bit X-Y-GMX-Trusted: 0 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sun, 2007-04-08 at 13:56 -0400, Gene Heskett wrote: > On Sunday 08 April 2007, Mike Galbraith wrote: > >On Sun, 2007-04-08 at 07:33 -0400, Gene Heskett wrote: > >> That seems to be the killer loading here, building a kernel (make -j3) > >> doesn't seem to lag it all that bad. One session of gzip -best makes > >> it fall plumb over though, which was a disappointment. > > > >Can you make a testcase that doesn't require amanda? > > > > -Mike > > Sure. Try 'tar czf nameofarchive.tar.gz /path/to-dir-to-be-backed-up' > > Or, from the runtar log from this morning, and this is all one line: > > runtar.20070408022016.debug:running: /bin/tar: 'gtar' '--create' '--file' '-' '--directory' '/usr/dlds-rpms' '--one-file-system' '--listed-incremental' '/usr/local/var/amanda/gnutar-lists/coyote_usr_dlds-rpms_1.new' '--sparse' '--ignore-failed-read' '--totals' '--exclude-from' '/tmp/amanda/sendbackup._usr_dlds-rpms.20070408022016.exclude' '.' > > and amanda will if requested, pipe that output through a |gzip -best, and > its this process that brings the machine to the table begging for scraps > like a puppy. Tar by itself can be felt but isn't bad. So tar -cvf - / | gzip --best | tar -tvzf - should reproduce the problem? -Mike