[Standards] Proposed XMPP Extension: Stream Compression with Efficient XML Interchange

Peter Saint-Andre stpeter at stpeter.im
Tue Feb 19 17:21:23 UTC 2008

Fabio Forno wrote:

> Comments:
> - the overall compression seems low (1/3)
> - but until ~ 48K it was just the login sequence and the roster &
> presence burst (my roster is large... not as Peter's, but large)
> - after that I had a chat with a buddy and the compression of messages
> is ~ 1/7
> - therefore I think it's worth optimizing the start sequence, 

Yes, that's fast-reconnect or roster caching or something. We'll need
several different techniques to truly solve the problem.

> 50K for
> just logging in are a nonsense, and than with zlib we live pretty
> well...
> If you want more data the dump is still going on... just ping me, i
> can provide also the real traffic (no sensitive data to be hidden, I'm
> not planning a terrorist attack :P)
> PS while I was writing this message the conversation went on, the
> figures in this moment:
> (82648, 23106)
> (still behaving very well after the startup)

Is the session still going on? ;-) I'm interested in what happens over a
long session...


Peter Saint-Andre

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