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List:       linux-java
Subject:    Size of releases - compression/deltas
From:       Artur Biesiadowski <abies () pg ! gda ! pl>
Date:       1998-05-31 17:37:55
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I'm probably not only person with slow, not reliable inet connection.
Any way to reduce download size of jdks would be very nice. I think
about two things:
1) Use bzip2 instead of gzip. It is normally about 20% smaller (it
counts whith files > 10MB). Of course gzip is more popular, but
providing either link or bzip binaries wouldn't be a great problem. Or
if space allows distribute both .gz and .bz2 versions.

2) Use xdelta (from ftp://scam.xcf.berkeley.edu/pub/jmacd)
It generates binary diffs between archive files - I suppose that it
could be very efficient for small version differences - ie from 1.1.5-v6
to 1.1.5-v7. Could somebody with access to all these jdks make tests and
report it ? Maybe even cross versions could be done (1.1.5 to 1.1.6).

Artur

P.S.
I would be personally interested in xdeltas of jdk - I do have
linux-jdk.1.1.3-v2.tar.gz size 9093801
Can somebody make xdeltas to one of new releases (newest 1.1.5 or 1.1.6)
and report their sizes/mail them to me if smaller than 2-3 MB ?

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