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https://issues.apache.org/jira/browse/NIFI-5241?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16503875#comment-16503875
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ASF GitHub Bot commented on NIFI-5241:
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Github user markap14 commented on the issue:
https://github.com/apache/nifi/pull/2752
@mcgilman that's a good call. I pushed a new commit that addresses that. I
also rebased against master, since quite a bit has changed, and all still seems
to work well.
> When calculating stats for components, use synchronized methods instead of
> atomic variables
> -------------------------------------------------------------------------------------------
>
> Key: NIFI-5241
> URL: https://issues.apache.org/jira/browse/NIFI-5241
> Project: Apache NiFi
> Issue Type: Improvement
> Components: Core Framework
> Reporter: Mark Payne
> Assignee: Mark Payne
> Priority: Major
> Fix For: 1.7.0
>
>
> Currently, the EventSumValue that is used to calculate stats for components,
> such as bytes in, bytes out, etc. using AtomicLong's and AtomicInteger's, etc
> to keep track of values. This made sense at first when there were only a few
> stats. Now, however, they hold about 17 different values and the atomic
> updates / atomic reads are more expensive than a synchronized method would
> be. This can cause sluggishness in the UI after the instance has been running
> for a while, especially if there are a lot of processors.
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