Re: Throughput decreases as latency increases with YCSB

2012-10-29 Thread Peter Bailis
> > I'm using YCSB on EC2 with one m1.large instance to drive client load To add, I don't believe this is due to YCSB. I've done a fair bit of client-side profiling and neither client CPU or NIC (or server NIC) are bottlenecks. I'll also add that this dataset fits in memory. Thanks! Peter

Throughput decreases as latency increases with YCSB

2012-10-29 Thread Peter Bailis
Hi, I'm currently benchmarking Cassandra and have encountered some interesting behavior. As I increase the number of client threads (and connections), latency increases as expected but, at some point, throughput actually decreases. I've seen a few posts about this online, with no clear resolution