Hi,
attached you'll find a patch that changes the coyote multithreading model to a "hybrid" threading model (NIO+Mulithread). It's fully compatible with the existing Catalina code and is SSL enabled.
The Hybrid model breaks the limitation of one thread per connection, thus you can have a higher number of concurrent users with a lower number of threads. NIO selectors are utilized to detect when a user connection becomes active ( i.e. there is a user http request available to be read), and then, one thread processes the connection as usual, but without blocking on the read() operation because we know that there is one available request.
The Hybrid model eliminates the need to close inactive connections (especially important under high load or SSL load) and reduces the number of necessary threads.
The patch will be also downloadable in short from http://www.bsc.es/edragon/. Next week I will make available a performance comparison between Tomcat 5.5.9 and the modified Tomcat (Static content, Dynamic content, Secure Dynamic Content and scalability on SMP machines). I'm testing it with RUBiS, Surge and httperf.
Now, I am working on the admission control mechanism because it should be improved. (The number of threads doesn't limit the number of concurrent connections so we need to limit it in some way).
I think this demonstrates the problem with trying to do stuff on your own, not looking at development activity or communicating with anyone, and then dumping a big patch (which I find quite dirty; as is, as Mladen just posted, it has zero chance of being committed) on unsuspecting developers. It's a bit a caricature of the phenomenon, actually ;)
Rémy
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