Zsync for Packages files

[Lars Wirzenius]

ma, 2009-07-20 kello 22:46 +0200, Tollef Fog Heen kirjoitti:
> ]] Max Bowsher 
> 
> | That's interesting - I would have thought that it would simply lead to
> | many small pdiff files being created, but the system overall still
> | working fine. How is the usability damaged?
> 
> You'll need to get quite a lot of small files, which means you get hit
> by TCP's slow start algorithm again and again rather than just grabbing
> one big file once.

Surely apt uses a single TCP connection to fetch all the pdiff files?
That is, HTTP pipelining, or whatever it is called, to do several HTTP
requests over a singel TCP connection.

At this point we're in speculation territory. Does someone have the
ability to do a quick benchmark to see how much data a week's worth of
Packages file updates for karmic takes, using pdiffs? I'd be happy to
provide the files I snapshotted for this, but I don't have the time to
actually do the benchmark.