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https://issues.apache.org/jira/browse/STORM-1632?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15210917#comment-15210917
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ASF GitHub Bot commented on STORM-1632:
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Github user knusbaum commented on the pull request:
https://github.com/apache/storm/pull/1217#issuecomment-201009206
If the detriment does turn out to be fairly small, I would like to see this
left on by default. People, I think, are going to be much happier with a
feature-full UI by default, and left to disable stuff for
super-fast-hyper-performance.
> 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
>
>
> 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
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