From owner-freebsd-hackers@FreeBSD.ORG Mon Oct 8 06:36:40 2012 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id DCF6D1065672 for ; Mon, 8 Oct 2012 06:36:40 +0000 (UTC) (envelope-from trond@fagskolen.gjovik.no) Received: from smtp.fagskolen.gjovik.no (smtp.fagskolen.gjovik.no [IPv6:2001:700:1100:1:200:ff:fe00:b]) by mx1.freebsd.org (Postfix) with ESMTP id 5E5F88FC0A for ; Mon, 8 Oct 2012 06:36:38 +0000 (UTC) Received: from mail.fig.ol.no (localhost [127.0.0.1]) by mail.fig.ol.no (8.14.5/8.14.5) with ESMTP id q986aUKx069523 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Mon, 8 Oct 2012 08:36:30 +0200 (CEST) (envelope-from trond@fagskolen.gjovik.no) Received: from localhost (trond@localhost) by mail.fig.ol.no (8.14.5/8.14.5/Submit) with ESMTP id q986aTrZ069520; Mon, 8 Oct 2012 08:36:30 +0200 (CEST) (envelope-from trond@fagskolen.gjovik.no) X-Authentication-Warning: mail.fig.ol.no: trond owned process doing -bs Date: Mon, 8 Oct 2012 08:36:29 +0200 (CEST) From: =?ISO-8859-1?Q?Trond_Endrest=F8l?= Sender: Trond.Endrestol@fagskolen.gjovik.no To: Wojciech Puchar In-Reply-To: Message-ID: References: <5069C9FC.6020400@brandonfa.lk> User-Agent: Alpine 2.00 (BSF 1167 2008-08-23) Organization: Fagskolen Innlandet OpenPGP: url=http://fig.ol.no/~trond/trond.key MIME-Version: 1.0 Content-Type: MULTIPART/MIXED; BOUNDARY="2055831798-1630032467-1349678190=:36463" X-Spam-Status: No, score=-2.9 required=5.0 tests=ALL_TRUSTED,BAYES_00 autolearn=ham version=3.3.2 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on mail.fig.ol.no Cc: freebsd-hackers@freebsd.org, Brandon Falk Subject: Re: SMP Version of tar X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 08 Oct 2012 06:36:41 -0000 This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. --2055831798-1630032467-1349678190=:36463 Content-Type: TEXT/PLAIN; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT On Sun, 7 Oct 2012 19:00+0200, Wojciech Puchar wrote: > > I would be willing to work on a SMP version of tar (initially just gzip or > > something). > > > > I don't have the best experience in compression, and how to multi-thread it, > > but I think I would be able to learn and help out. > > gzip cannot - it is single stream. > > bzip2 - no idea Check out archivers/pbzip2. > grzip (from ports, i use it) - can be multithreaded as it packs using fixed > large chunks. -- +-------------------------------+------------------------------------+ | Vennlig hilsen, | Best regards, | | Trond Endrestøl, | Trond Endrestøl, | | IT-ansvarlig, | System administrator, | | Fagskolen Innlandet, | Gjøvik Technical College, Norway, | | tlf. mob. 952 62 567, | Cellular...: +47 952 62 567, | | sentralbord 61 14 54 00. | Switchboard: +47 61 14 54 00. | +-------------------------------+------------------------------------+ --2055831798-1630032467-1349678190=:36463--