On Fri Apr 4 09:16:34 2008, Pedro Melo wrote:
On Apr 3, 2008, at 10:40 PM, Alexander Gnauck wrote:
Carlo v. Loesch schrieb:
Yes, that's why I started thinking about something better in 1990.
I understood there was no way for IRC to be 'fixed' because its
design
is fundamentally flawed. XMPP is only syntactically flawed, which
is
a much better starting point. And you can argue that's just my
opinion.
That's ok. Still IRC does multicast, and XMPP is still missing
that,
and Pedro is the kind of person who can see the impact of that
each day.
I also see this impact. With the situation we have *today* I agree
with Dave that we don't save much traffic and stanzas with
repeaters. There is nearly no PubSub usage at all today, and in
the most Muc rooms we have only 5-30 participants. If I look at
the participants of jdev today than the most users have local
jabber.org Jids, and max. 2 or 3 participants are on the same
federated server. People join and leave, so there will be a tie
between the stanzas we save in the repeater and the overhead to
maintain the distribution list in the repeater.
A quick data-point: the largest pubsub node *right now*, has a bit
over 73000 (73056 to be exact) subscribers, the top 3 are all above
72k. And this service is only for local users of the server.
To state the obvious (which I'm sure you know), nothing's going to
help this case...
[OT] And yes, even now, with only local users, we see a bit spike
in ejabberd when we have a new notification. This is a old version
of ejabberd and we are using a component connection, I'm sure that
if we move this to angie in 2.x we will improve a bit.
... unless you ran a repeater over the component link, of course,
which might work. Or might not - but a component protocol might need
this sort of thing.
Dave.
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