From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752915AbXDIFRO (ORCPT ); Mon, 9 Apr 2007 01:17:14 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752929AbXDIFRO (ORCPT ); Mon, 9 Apr 2007 01:17:14 -0400 Received: from vms042pub.verizon.net ([206.46.252.42]:44362 "EHLO vms042pub.verizon.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752914AbXDIFRN (ORCPT ); Mon, 9 Apr 2007 01:17:13 -0400 Date: Mon, 09 Apr 2007 01:16:33 -0400 From: Gene Heskett Subject: Re: Ten percent test In-reply-to: <1176092271.6355.16.camel@Homer.simpson.net> To: linux-kernel@vger.kernel.org Cc: Mike Galbraith , Ingo Molnar , Con Kolivas , Andrew Morton , ck list Message-id: <200704090116.37329.gene.heskett@gmail.com> Organization: Organization? very little MIME-version: 1.0 Content-type: text/plain; charset=utf-8 Content-transfer-encoding: 7bit Content-disposition: inline References: <200703290237.38777.kernel@kolivas.org> <200704081356.48843.gene.heskett@gmail.com> <1176092271.6355.16.camel@Homer.simpson.net> User-Agent: KMail/1.9.6 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Monday 09 April 2007, Mike Galbraith wrote: >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 That looks as if it should demo it pretty well if I understand correctly everything you're doing there. -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) In /users3 did Kubla Kahn A stately pleasure dome decree, Where /bin, the sacred river ran Through Test Suites measureless to Man Down to a sunless C.