Github user harshach commented on the issue: https://github.com/apache/storm/pull/2241 @revans2 I am trying to reproduce the worst-case in your last chart. Running TVL topology with 4 spout, 10 splitters, 4 counters, 2 ackers. Here is the code https://gist.github.com/harshach/73dae347c178ac5dd8651cb0e7902412 Running it via following command against Master and STORM-2306 `/bin/storm jar /tmp/storm-starter-2.0.0-SNAPSHOT.jar org.apache.storm.starter.ThroughputVsLatency 500 1 -c topology.workers=1 -c topology.max.spout.pending=500 -c topology.acker.executors=2` You can look at my results here https://docs.google.com/spreadsheets/d/1wPpC3YXp-vTIelRTUVoLxuxIYxUekiIHUpZ2ZEysC4Y/edit#gid=1239810430 in **sheet 2** What I see not much difference between Master and STORM-2306. Let me know if I am missing something in running this test.
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