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From "Pier P. Fumagalli" <>
Subject Re: Tomcat crashes simultaneous more connection above 990+
Date Mon, 13 Aug 2001 14:07:00 GMT
Jeff Turner at wrote:

> Well I think you're completely nuts :) For 10,000 concurrent requests for
> *dynamic* data (or else you'd just be using Apache.. right?), you'd need a
> server farm full of fancy equipment, a load-balancing server, and stuff that
> even my wildly ignorant speculations can't conceive.
> Besides, I don't think any single server with simple thread-per-request,
> blocking IO model can handle that sort of load. A smart fellow called Matt
> Welsh did his PhD thesis on highly concurrent server apps, and the results of
> his thinking are here:
> In particular, the paper "The Staged Event-Driven Architecture for Highly
> Concurrent Servers." is well worth reading.

It _can_ be done... Probably not in Java (I'm not that sure it can handle
that many file descriptors open), but I've seen a Sun E4500 (fully
populated) holding up 20k connections with 100 processes and 200 threads
each... But it was a 1 million $$$ machine...

Load balancing... :)


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