axiqia commented on issue #4414: Performce: the latency and total run time increase when invoker_user_memory increase? URL: https://github.com/apache/incubator-openwhisk/issues/4414#issuecomment-479409214 After `increase limit_invocations_per_minute` and `limit_invocations_concurrent`, I test the latency with stop 2GB.  The latency decreases first and then increases. So I did a more fine-grained test with the step 1GB, the result is more reasonable. 
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