[JDEV] Scalability?

[Dennis Noordsij]

> Hmmm... a few thousand for me are: 250000 in the first year :)

The relevant numbers though are (try them here to get a reaction from jabber 
core people) how many users are online at any given time, and how many 
messages per second you expect to handle.

> > PS Real limits are messages/second. An idle user only takes up a few kb
> > of memory, but 2 users sending 100 messages/second will hurt the server
> > :-)
>
> Hmmm.. We use a Sun e420R (4 * UltraSparc2 at 450MHz , 4GB of RAM) for the
> jabber
> server, Sun take high I/O loads quite well :)

Well yes, but keep in mind that 250000 users means 250000 active TCP/IP 
connections. That's quite an unusual load for a server (compared to HTTP or 
FTP etc). Using external I/O multiplexers (look for jpolld) you can get a 
long way though.

In my personal opinion jabber as-is is not suited for 250000 active users. 
But then again I've never tried it with that many :)

Goodluck, and it would be interesting to read about your progress :-)

Regards,
Dennis


> Someone should try publishing a jabber tests suite...
>
>
>
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