Hi, One of my cluster runs on ec2 and I noticed that I have rather slow throughput, less than 500 per second. I isolated the trouble on the following setup
1 producer instance (m1.large) 5 consumer instances also running a broker (m2.xlarge) 1 zookeeper instance (m1.large) I am using a sync producer and have 60 partitions. On my local box, with everything running I would several thousand per second.