Re: Interrogation about expected performance

2017-09-26 Thread kurt greaves
Sounds reasonable. How big are your writes? Also are you seeing a bottleneck? If so, what are the details? If everything is running fine with 200k writes/sec (compactions aren't backing up, not a lot of disk IO) then that's good. However you will also need to compare what you can achieve when you a

Interrogation about expected performance

2017-09-22 Thread Vincent Rischmann
Hello, we recently added a new 5 node cluster used only for a single service, and right now it's not even read from, we're just loading data into it. Each node are identical: 32Gib of RAM, 4 core Xeon E5-1630, 2 SSDs in Raid 0, Cassandra v3.11 We have two tables with roughly this schema: CREATE T