Hey LG,
About your post, I''m not sure about the numbers you are giving regarding the RAM memory. I know that your numbers are trying to give a high level overview and not an exact number. Anyway, the number can greatly vary based on number of defined vCards (if users are using them), size of images stored in vCards, number and size of groups, number of files being transfered (using the proxy), number and size of privacy lists, etc.. In fact, it will also depend on the max cache size and timeout that system caches are using.
My initial recommendation for menno at this point is that he will need to reduce the "stack size" of the threads. Each thread in the JVM get''s a stack. The stack size will limit the number of threads that you can have, too big of a stack size and you will run out of memory as each thread is allocated more memory than it needs. Use the -Xss parameter to set the smallest possible value. This value should be passed to java when starting the server.
And as you mentioned he will need to increase the url=http://java.sun.com/performance/reference/whitepapers/tuning.html#section4.1 .2max heap size and probably change the size of the "young generation"[/url] memory. You may also want to read the url=http://java.sun.com/performance/reference/whitepapers/tuning.htmlJava Tuning White Paper[/url] to learn how to finetune Java to get the max of it.
Regards,
-- Gato
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