Nope, no MVs On Thu, Dec 8, 2016 at 11:31 AM, Benjamin Roth <benjamin.r...@jaumo.com> wrote:
> Just an educated guess: you have materialized Views? They are known to > Stream very slow > > Am 08.12.2016 10:28 schrieb "Aleksandr Ivanov" <ale...@gmail.com>: > >> Yes, I use compression. >> Tried without and it gave ~15% increase in speed, but is still too low >> (~35Mbps) >> >> 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/msg42 >> 095.html) >> >> >> >>> > 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 >>> >> >>
