From owner-freebsd-hackers@FreeBSD.ORG Fri Oct 13 16:48:17 2006 Return-Path: X-Original-To: freebsd-hackers@FreeBSD.ORG Delivered-To: freebsd-hackers@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id DAF7816A4E2; Fri, 13 Oct 2006 16:48:17 +0000 (UTC) (envelope-from tim@kientzle.com) Received: from kientzle.com (h-66-166-149-50.snvacaid.covad.net [66.166.149.50]) by mx1.FreeBSD.org (Postfix) with ESMTP id 745A043EAB; Fri, 13 Oct 2006 16:47:25 +0000 (GMT) (envelope-from tim@kientzle.com) Received: from [10.0.0.221] (p54.kientzle.com [66.166.149.54]) by kientzle.com (8.12.9/8.12.9) with ESMTP id k9DGlO24013537; Fri, 13 Oct 2006 09:47:24 -0700 (PDT) (envelope-from tim@kientzle.com) Message-ID: <452FC31C.2030505@kientzle.com> Date: Fri, 13 Oct 2006 09:47:24 -0700 From: Tim Kientzle User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.7.12) Gecko/20060422 X-Accept-Language: en-us, en MIME-Version: 1.0 To: freebsd-hackers@FreeBSD.ORG, kientzle@FreeBSD.ORG, dougb@FreeBSD.ORG References: <200610131345.k9DDjYkD030561@lurza.secnetix.de> In-Reply-To: <200610131345.k9DDjYkD030561@lurza.secnetix.de> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Cc: Subject: Re: "tar -c|gzip" faster than "tar -cz"?!? 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: Fri, 13 Oct 2006 16:48:18 -0000 Oliver Fromme wrote: > Meanwhile I had a quick look at the code: gzip uses some > optimized assembler code ... Maybe that's the reason why > gzip is noticeably faster. Anyone care to try this test on PPC, ARM, or Sparc? There's a move afoot to replace the GPL gzip with a more openly-licensed gzip implemented on top of libz. I wonder if the libz implementors have similar assembly optimizations that we should be using? Tim Kientzle