How can I do to free ByteBuffers much more as possible ? With 2000 opened IoSessions I have about 312 Mb of ram busy.
312/2000 = 156 KB/user, not too much. java is very memory hungry. i only have small bytebuffers (<4k) and with 500 users, the server consumes about 80MB (linux). i also tested for memory leaks with a profiler, and i must confess there were many, mostly improperly released JDBC resources. there is the danger in java-garbage-collection, that the programmer relies too much on the runtime system to clean up the memory. developing long-running application needs you to take an extra care for that kind of problems. another example on my suse linux testserver, MySQL closes all connections after 8 hours.
When I receive chat messages I see memory occupation to grow...Is there some natural mina activity I'm losing during reading/writing operations ?
i think memory occupation grows when *sending* the chat messages back to the users. even if you send a single message, if you send them to 2000 users, the single message will get copied into 2000 mina byte buffers. that's why i still miss ByteBuffer.duplicate() in mina. it was probably made just for that kind of situation. mina-experts, please correct me if i am wrong about the copying. kaspar -- --------------------------------------------- http://www.humantools.com
