From owner-svn-src-head@FreeBSD.ORG Mon Feb 9 13:11:37 2015 Return-Path: Delivered-To: svn-src-head@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 449F2351; Mon, 9 Feb 2015 13:11:37 +0000 (UTC) Received: from woozle.rinet.ru (woozle.rinet.ru [195.54.192.68]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 98C49F4E; Mon, 9 Feb 2015 13:11:36 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by woozle.rinet.ru (8.14.5/8.14.5) with ESMTP id t19D80RH096398; Mon, 9 Feb 2015 16:09:00 +0300 (MSK) (envelope-from marck@rinet.ru) Date: Mon, 9 Feb 2015 16:08:00 +0300 (MSK) From: Dmitry Morozovsky To: Glen Barber Subject: Re: svn commit: r278433 - in head: . contrib/xz contrib/xz/src/common contrib/xz/src/liblzma contrib/xz/src/liblzma/api contrib/xz/src/liblzma/api/lzma contrib/xz/src/liblzma/check contrib/xz/src/liblz... In-Reply-To: <20150209123057.GF84467@hub.FreeBSD.org> Message-ID: References: <201502090620.t196KZSk040702@svn.freebsd.org> <20150209122540.GE84467@hub.FreeBSD.org> <20150209123057.GF84467@hub.FreeBSD.org> User-Agent: Alpine 2.00 (BSF 1167 2008-08-23) X-NCC-RegID: ru.rinet X-OpenPGP-Key-ID: 6B691B03 MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.4.3 (woozle.rinet.ru [0.0.0.0]); Mon, 09 Feb 2015 16:09:07 +0300 (MSK) Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org, Rui Paulo X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 09 Feb 2015 13:11:37 -0000 Glen, On Mon, 9 Feb 2015, Glen Barber wrote: > > > Log: > > > Merge xz 5.2.0. > > > > > > This brings support for multi-threaded compression. This brings close > > > N times faster compression where N is the number of CPU cores. > > > Because of this, liblzma now depends on libthr. > > > > This is fantastic, thank you for doing this update. > > > > FWIW, compressing VM images (some sparse files, some not) would take > > upwards of 45 minutes, which after this update, just takes a few > > minutes. > > > > root@releng2:/R2/vmimages # time xz -T 0 -k FreeBSD-11.0-CURRENT-amd64.qcow2 \ > > time xz -T 0 -k FreeBSD-11.0-CURRENT-amd64.raw; \ > > time xz -T 0 -k FreeBSD-11.0-CURRENT-amd64.vhd; \ > > time xz -T 0 -k FreeBSD-11.0-CURRENT-amd64.vmdk > > 1027.602u 40.376s 1:09.57 1535.1% 81+192k 0+19774io 0pf+0w > > 1032.978u 38.823s 1:08.17 1572.2% 81+192k 0+19696io 0pf+0w > > 1033.908u 38.593s 1:11.70 1495.8% 81+192k 0+19729io 0pf+0w > > 1091.749u 42.371s 1:04.27 1764.6% 81+192k 0+19751io 0pf+0w > > > > I meant to include that this is on a 48-core machine. Hm, I can't beleive you didn't use pxz ;) Anyway, having this in base, and not depending on external tool, is amazingly great. BTW, Rui, did you some comparative tests with pxz? -- Sincerely, D.Marck [DM5020, MCK-RIPE, DM3-RIPN] [ FreeBSD committer: marck@FreeBSD.org ] ------------------------------------------------------------------------ *** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck@rinet.ru *** ------------------------------------------------------------------------