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ASF GitHub Bot commented on STORM-1632: --------------------------------------- Github user harshach commented on the pull request: https://github.com/apache/storm/pull/1217#issuecomment-201116132 @ptgoetz I understand it is not hard to change the config. But the default behavior shouldn't be affecting peformance. Going to 1.0 can hit 9% perf hit just because we are shipping a new feature that can cause performance issue . UI can be fixed in the same patch as well. Just don't show the buttons on the UI if the event.loggers are set to 0. Its a SIMPLE FIX > Disable event logging by default > -------------------------------- > > Key: STORM-1632 > URL: https://issues.apache.org/jira/browse/STORM-1632 > Project: Apache Storm > Issue Type: Bug > Components: storm-core > Reporter: Roshan Naik > Assignee: Roshan Naik > Priority: Blocker > Fix For: 1.0.0 > > Attachments: BasicTopology.java > > > EventLogging has performance penalty. For a simple speed of light topology > with a single instances of a spout and a bolt, disabling event logging > delivers a 7% to 9% perf improvement (with acker count =1) > Event logging can be enabled when there is need to do debug, but turned off > by default. > **Update:** with acker=0 the observed impact was much higher... **25%** > faster when event loggers = 0 -- This message was sent by Atlassian JIRA (v6.3.4#6332)