Date: Wed, 2 Apr 2014 11:51:34 -0400 From: Glen Barber <gjb@FreeBSD.org> To: Brooks Davis <brooks@freebsd.org> Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org Subject: Re: svn commit: r264027 - in head: release share/man/man7 Message-ID: <20140402155134.GG14379@glenbarber.us> In-Reply-To: <20140402154022.GA70867@lor.one-eyed-alien.net> References: <201404012241.s31MfRW6020684@svn.freebsd.org> <20140402154022.GA70867@lor.one-eyed-alien.net>
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--GdbWtwDHkcXqP16f Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable 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 > >=20 > > Log: > > Add a new release build variable, WITH_COMPRESSED_IMAGES. > > =20 > > 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. > > =20 > > With gzip(1) compression, downloadable image are reduced in > > size quite significantly. Build test against head@263927 > > shows the following: > > =20 > > bootonly.iso: 64% smaller > > disc1.iso: 44% smaller > > memstick.img: 47% smaller > > mini-memstick.img: 65% smaller > > dvd1.iso: untested > > =20 > > 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. >=20 > 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). >=20 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 --GdbWtwDHkcXqP16f Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (FreeBSD) iQIcBAEBCAAGBQJTPDIGAAoJELls3eqvi17QnWoP+wb9RtzqD401dTgcqmvpp1sP Ak+YrL0FZ4C8gdnqmEvwOkjqfz24o3wacPvLXNFAkLuefvKJKJHMgohoG18BJp72 l7ozvJydnqSMsefVO0LMip7ClUPq3x9tA23ZAX+um1Sc/By6cOjHBnJ+9Ad/YxOs cu78wkIJDTbLyDkswhB9q7gl9QA5N0yraTP3crNop934JfD80wmGjRdqcn8vjvgf iJiUEHGXxMyL4XE9DmO/8W+w/i405dLBDFosz/+Ya6+g7IQeQQJGF8ill3okkn7M S81KOwL3uHO3KTVSyaMxqONYJ2ScwKZOm3rZdN5r4njD7XkMBfY9uuYdDo4XCc2P TJ3D/T00aiFhUz7rNw6mri07fI+PvmHjlOmhi21APrdbrsjNFQT4YKefy8Y0EVha BMo1eGZKOT7EiedE5YOIjNHSzs0UIH6AioLquJkjHogPgBhBqMA8uX6UKaFtREUb yR8QlNHruMvJEsv6R4b/zBo5wTN4FBHQCN91rnPPma6IkLvpZFknKu0TuSMXXDpi aT1qFAo6XuZP8GavHQiCREFvss74K6xbCBqSNU2SyzNyVVxR0NnRRVWvacri4pEr wJnQLa9NibPM1ChKQbM0ObEr4H4QlwwQbvq5OEvFEosHCnAe300vARgShMG3etK6 MNdKjB3MlAr1A90XpdD2 =yIbk -----END PGP SIGNATURE----- --GdbWtwDHkcXqP16f--
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