On 04/02/14 11:51, Glen Barber wrote: > On Wed, Apr 02, 2014 at 10:40:22AM -0500, Brooks Davis wrote: >> On Tue, Apr 01, 2014 at 10:41:27PM +0000, Glen Barber wrote: >>> Author: gjb >>> Date: Tue Apr 1 22:41:26 2014 >>> New Revision: 264027 >>> URL: http://svnweb.freebsd.org/changeset/base/264027 >>> >>> Log: >>> Add a new release build variable, WITH_COMPRESSED_IMAGES. >>> >>> When set to a non-empty value, the installation medium is >>> compressed with gzip(1) as part of the 'install' target in >>> the release/ directory. >>> >>> With gzip(1) compression, downloadable image are reduced in >>> size quite significantly. Build test against head@263927 >>> shows the following: >>> >>> bootonly.iso: 64% smaller >>> disc1.iso: 44% smaller >>> memstick.img: 47% smaller >>> mini-memstick.img: 65% smaller >>> dvd1.iso: untested >>> >>> This option is off by default, I would eventually like to >>> turn it on by default, and remove the '-k' flag to gzip(1) >>> so only compressed images are published on FTP. >> >> I'd recommend testing xz compression as well. With UFS images of a full >> world the savings vs gzip are significant (more than 30% IIRC, but it's >> need more than a year since I checked so I'm a bit unsure of the exact >> numbers). >> > > delphij also brought this up. > > I have concerns with xz(1), since there was mention in IRC that Windows > users may have problems decompressing xz-compressed images. So, gzip(1) > is used because it seems to be the more commonly-supported archive > mechanisms. > > The benefit of xz(1) over gzip(1) was only 50M-ish. > > -rw-r--r-- 1 root wheel 601M Mar 28 20:18 disc1.iso > -rw-r--r-- 1 root wheel 381M Mar 28 20:18 disc1.iso.bz2 > -rw-r--r-- 1 root wheel 392M Mar 28 20:18 disc1.iso.gz > -rw-r--r-- 1 root wheel 348M Mar 28 20:18 disc1.iso.xz > > Glen >
How about 7zip (Windows program, not file format)? What would a Windows user use that can decompress gzip and not xz? It was a problem around ~2007, but xz support is no longer rare or exotic. - Nikolai Lifanov _______________________________________________ svn-src-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
