raf [[EMAIL PROTECTED]] writes:
> rusty russell has hacked gzip to make it rsyncable! it sounds
> like it'll become the default behaviour of gzip but until then:
Hmm, this would be extremely useful to me, but a quick test seemed to
show that it's not really that effective (at least with a test file of
mine).
I've got a 50MB database that compresses to about 21MB. Rsyncing
versions of the file one day apart (uncompressed) transfers about
2.9MB of information - rsync shows an 18.3x improvement. Rsyncing
gzip'd versions is roughly a flat transfer (1.0x), and using this
--rsyncable option on gzip only bumps that up to 1.3x (19MB).
I haven't dug into the patch too deeply yet - perhaps it's designed to
work with a certain block size or something?
-- David
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