On Thu, Dec 8, 2016 at 3:27 AM, Aleksandr Ivanov <ale...@gmail.com> wrote: > On sending side no high CPU/IO/etc utilization. > But on receiving node I see that one "STREAM-IN" thread takes 100% CPU and > it just doesn't scale by design since "Each stream is a single thread" > (http://www.mail-archive.com/user@cassandra.apache.org/msg42095.html)
Right, that is your bottleneck. There is no per-host concurrency; I'm afraid there is not much you can do about it at the moment. https://issues.apache.org/jira/browse/CASSANDRA-4663 might be relevant Cheers, -- Eric Evans john.eric.ev...@gmail.com
