03-11-2015, 12:39 AM
Regarding Chunk Sending/Generating, how many cores does you're server have? Also do you have the split for how the CPU was across cores? At the moment our threads are setup so that on a quad core machine lighting, sending and generating should be on separate cores, with one left over for world ticking. Since you're CPU was running at 55% the server was probably IO bound on the chunk sending, in which case we should look at the networking subsystems for sending that much data/more intelligent ways of sending chunk updates. (With default view-distance the initial sync is 20 MB of data). However if it was CPU bound it would be useful to look at running multiple threads or possibly compressing one chunk then sending it to multiple people.