Re: Apt and rsync... I know...
Florian Weimer <email@example.com> writes:
> Goswin von Brederlow wrote:
> > > Delta sizes are:
> > >
> > > rdiff 7302952
> > > rdiff (gzip -9) 2423336
> > > svndelta 1793107
> > > svndelta (gzip -9) 1539271
> > > xdelta (-0) 1751110
> > > xdelta (-9) 935281
> rsync 7654580
> rsync (gzip -9) 2487882
> Numbers were obtained using the experimental batch mode. Only the delta
> file size is included. Not surprisingly, they are quite similar to
> > > svndelta is quite CPU-intensive, compared to the others. (I'm not sure
> > > if it's because of the base64 encoding, which isn't included in the
> > > numbers above.) xdelta and rdiff use comparable amounts of CPU time
> > > (with and without compression). xdelta seems to need memory proportional
> > > to the size of the input files, which might be a problem.
> xdelta needs all data in core, and is suitable for small patches only.
> > And what does rsync say? Ucompressed, gzip -9 and gzip with
> > --rsyncable please.
> Why do you want rsyncable rsync deltas?
No, rsync deltas on the data.tar.gz with --rsyncable. I.e. what one
would get on a plain deb if dpkg used --rsyncable.