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)
Maybe your System cannot Stream faster. Is your cpu or hd/ssd fully > utilized? > > Am 07.12.2016 16:07 schrieb "Eric Evans" <john.eric.ev...@gmail.com>: > >> On Tue, Dec 6, 2016 at 9:54 AM, Aleksandr Ivanov <ale...@gmail.com> >> wrote: >> > I'm trying to decommission one C* node from 6 nodes cluster and see that >> > outbound network traffic on this node doesn't go over ~30Mb/s. >> > Looks like it is throttled somewhere in C* >> >> Do you use compression? Try taking a thread dump and see what the >> utilization of the sending threads are. >> >> >> -- >> Eric Evans >> john.eric.ev...@gmail.com >> >
