Optimization Guidelines
In any Storm based platform, there are many parameters that control the system’s performance. The values of these parameters vary greatly with differences in cluster size and data velocity. Ensuring that you have a properly tuned index is key to overall system performance. The following Storm parameters may also be tuned to improve overall system performance. See the Storm user guide for detailed discussion.
num.workers
num.ackers
max.spout.pending
topology.worker.childopts – increase heap size (-XmxNNNNm –XmsNNNNm)
topology.workers"