From: geoff@collyer.net
To: 9fans@cse.psu.edu
Subject: Re: [9fans] ideas for a new install procedure
Date: Wed, 14 Nov 2001 02:44:53 -0800 [thread overview]
Message-ID: <20011114104532.3064919A3D@mail.cse.psu.edu> (raw)
9pc*.gz are compressed with gzip:
; ed - /sys/src/9/pc/mkfile
/gzip/;-,.p
$p$CONF.gz: $p$CONF
strip < $p$CONF | gzip -9 > $p$CONF.gz
I haven't been impressed with bzip2. It consumes a lot more cpu time
and doesn't seem to yield correspondingly better compression. The
comparison I made was compressing the first 1GB of an image of a
heavily-used 4.5 GB disk, using gzip, gzip -9, bzip2 and bzip2 -9. It
compressed down to about 45% of original size. -9 never helped much
(maybe 5% at most) and bzip2 consumed about an order of magnitude more
cpu time for very little gain, maybe another 5%. I like to get my
gigabytes compressed while I'm still young enough to enjoy them, so
I've pretty much given up on bzip2. If you had to shave a few
kilobytes off a compressed kernel to make the install kit fit on a
floppy, it might be worth using bzip2 -9.
next reply other threads:[~2001-11-14 10:44 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-11-14 10:44 geoff [this message]
2001-11-14 14:07 ` William Josephson
2001-11-15 10:41 ` Ralph Corderoy
2001-11-15 14:09 ` Sam Hopkins
-- strict thread matches above, loose matches on Subject: below --
2001-11-14 23:20 Russ Cox
2001-11-14 23:18 Russ Cox
2001-11-14 23:04 anothy
2001-11-14 22:35 Russ Cox
2001-11-14 23:57 ` Dan Cross
2001-11-14 21:34 forsyth
2001-11-14 21:33 forsyth
2001-11-14 22:33 ` Dan Cross
2001-11-14 23:03 ` Jason Gurtz
2001-11-14 23:59 ` Dan Cross
2001-11-15 17:24 ` Jason Gurtz
2001-11-14 20:03 Russ Cox
2001-11-14 21:22 ` Dan Cross
2001-11-14 14:31 Fco.J.Ballesteros
2001-11-14 9:18 Fco.J.Ballesteros
2001-11-14 16:09 ` Jason Gurtz
2001-11-14 19:46 ` Dan Cross
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