Thanks for your answer Rob, On 12/03/2015 08:32 PM, Robert Coli wrote:
On Thu, Dec 3, 2015 at 7:51 AM, Jonathan Ballet <jbal...@edgelab.ch <mailto:jbal...@edgelab.ch>> wrote:I noticed it's not really fast and my monitoring system shows that the traffic incoming on this node is exactly at 100Mb/s (12.6MB/s). I know it can be much more than that (I just tested sending a file through SSH between the two machines and it goes up to 1Gb/s), is there a limitation of some sort on Cassandra which limit the transfer rate to 100Mb/s? Probably limited by number of simultaneous parallel streams. Many people do not want streams to go "as fast as possible" because their priority is maintaining baseline service times while rebuilding/bootstrapping. Not sure there's a way to tune it, but this is definitely on the "large node" radar..
I was actually a bit surprised that the limit seems to really be capped at 100 Mb/s, not more not less. So I was thinking there was something else playing here...
Jonathan
