From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([69.77.167.62] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1JJ4vv-0000Xi-5W for garchives@archives.gentoo.org; Sun, 27 Jan 2008 10:40:15 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id A561EE02F2; Sun, 27 Jan 2008 10:40:12 +0000 (UTC) Received: from 0815-web.localdomain (static.21.48.46.78.clients.your-server.de [78.46.48.21]) by pigeon.gentoo.org (Postfix) with ESMTP id 7673FE02F2 for ; Sun, 27 Jan 2008 10:40:12 +0000 (UTC) Received: by 0815-web.localdomain (Postfix, from userid 1007) id 103FA9DCBD3; Sun, 27 Jan 2008 11:40:16 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.2.1 (2007-05-02) on 0815-web.localdomain X-Spam-Level: X-Spam-Status: No, score=-100.1 required=5.0 tests=AWL,BAYES_00,PLING_QUERY, RCVD_IN_PBL,RCVD_IN_SORBS_DUL,RDNS_DYNAMIC,USER_IN_WHITELIST autolearn=no version=3.2.1 Received: from [192.168.1.33] (ip-62-143-21-146.1411O-CUD12K-04.ish.de [62.143.21.146]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by 0815-web.localdomain (Postfix) with ESMTP id E35599DCBD1 for ; Sun, 27 Jan 2008 11:40:13 +0100 (CET) Message-ID: <479C5F89.2060508@j-schmitz.net> Date: Sun, 27 Jan 2008 11:40:09 +0100 From: Justin User-Agent: Thunderbird 2.0.0.9 (X11/20071218) Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] Speed up with pbzip2 or not!? References: <479C55D6.70406@j-schmitz.net> In-Reply-To: <479C55D6.70406@j-schmitz.net> X-Enigmail-Version: 0.95.5 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Archives-Salt: 279e478f-fa08-49f5-a9a9-a5d566bf5e57 X-Archives-Hash: 9cfa9a80784a9ab71d556ad5ea5a1f19 Is there a way to use 7zip for decompression with emerge? Justin schrieb: > Hey guys! > > Yesterday I found this article > http://gentoo-wiki.com/HOWTO_Speed_up_decompression_with_pbzip2 and > was very happy, because I'm an owner of an Q6600. > > So I tried to reproduce the benchmark from the wiki article but got > that bad results: > > test # time *bzip2* -d -kf linux-2.6.23.tar.bz2 > > real 0m11.672s > user 0m11.306s > sys 0m0.367s > > > test # time *pbzip2* -d -p4 -kf linux-2.6.23.tar.bz2 > > real 0m25.554s > user 0m24.862s > sys 0m0.683s > > So the parallel version took more than the double time! > > To test whether this is a problem of my Pc I tested this on an Dual > Core with the same result. > > An test with 7z was much better: > > > test # time *7za* x -y linux-2.6.23.tar.bz2 > > real 0m4.642s > user 0m8.379s > sys 0m0.327s > > > All tests where done in a tmpfs off 1GB on 2GB RAM. > > > So my questions is what did I do wrong? > > I also tested it with different CFLAGS, but my CFLAGS are basically > very conservative. (-O2 -march=prescott -pipe -fomit-frame-pointer) -- gentoo-user@lists.gentoo.org mailing list