Hi there, session manager consumes a lot of ram. With ~300 users (roster is get from mysql) average ram usage is about 3,6 GiB, but sometimes it rises unexpectedly up to 6GiB in few seconds. Moreover, when are not a lot users connected to server CPU is ~100% and relative high load ~1.4(more users less cpu usage and lower load ~0.2) - lot of db writing.
I also noticed that roster for user is get from mysql many times (even when user is logged off and presence packet comes to him) Jabberd2 version 2.2.9 ww
