> -----Original Message-----
> From: Julian Foad [mailto:julianfoad_at_btopenworld.com]
> Sent: donderdag 28 februari 2013 20:54
> To: Ben Reser
> Cc: Magnus Thor Torfason; Subversion Development
> Subject: Re: FSFS format7 and compressed XML bundles
>
> Ben Reser wrote:
>
> > Speaking with Julian here at ApacheCon he mentioned that gzip has a
> > rsyncable option. Looking into this turns out that there is a patch
> > applied to Debian's gzip that provides this option. It resets the
> > compression algorithm every 1000 bytes and thus makes blocks that can
>
> Use of such a zip format would be ideal -- Subversion's binary-delta would
> then calculate an excellent delta as long as each inserted chunk is are
smaller
> than the delta window size (currently 100 KB, Stefan's proposal 1 MB).
Word documents are not plain deflate streams. The office documents are
normal zip files with a different extension (and only supporting the default
compression type).
You can make this work for this file type, but it needs different code than
making gzip use the same trick.
(The deflate is restarted per file, and there are file headers between the
files and at the end)
Bert
Received on 2013-02-28 21:32:27 CET