svn commit: r264027 - in head: release share/man/man7
Brooks Davis
brooks at freebsd.org
Wed Apr 2 15:40:30 UTC 2014
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 at 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).
-- Brooks
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