Re: Consistency Level throughput

2011-05-29 Thread aaron morton
You've not talked about how you are doing the tests (or i missed it). With 6 nodes and RF 3 when you read at ONE there is a 50% chance of the data read been served locally. In which case the request will return to the client very quickly. Allowing X number of clients to make Y number of request

Re: Consistency Level throughput

2011-05-26 Thread Ryu Kobayashi
My question is my throughput per case. > In general, cluster throughput = single node throughput * number of > nodes / replication factor. Yes, I think so too. But I really want to ask is there are no results. Could you look at the chart I made it? http://goo.gl/mACQa 2011/5/27 Maki Watanabe

Re: Consistency Level throughput

2011-05-26 Thread Maki Watanabe
I assume your question is on that "how CL will affects on the throughput". In theory, I believe CL will not affect on the throughput of the Cassandra system. In any CL, the coordinator node needs to submit write/read requests along the RF specified for the KS. But for the latency, CL will affects

Re: Consistency Level throughput

2011-05-26 Thread Jonathan Ellis
I'm afraid I don't quite understand the question. In general, cluster throughput = single node throughput * number of nodes / replication factor. On Thu, May 26, 2011 at 9:39 PM, Ryu Kobayashi wrote: > Hi, > > Question of Consistency Level throughput. > > Environment: > 6 nodes. Replication fact