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https://issues.apache.org/jira/browse/NIFI-10167?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Handermann resolved NIFI-10167.
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Fix Version/s: 1.17.0
Resolution: Fixed
> Allow tracking of detailed metrics such as CPU Usage by processors
> ------------------------------------------------------------------
>
> Key: NIFI-10167
> URL: https://issues.apache.org/jira/browse/NIFI-10167
> Project: Apache NiFi
> Issue Type: New Feature
> Components: Core Framework
> Reporter: Mark Payne
> Assignee: Mark Payne
> Priority: Major
> Fix For: 1.17.0
>
> Time Spent: 1.5h
> Remaining Estimate: 0h
>
> NiFi offers a great deal of detail on the canvas about how much data was
> read/written in the past 5 minutes, number of tasks run, and how much time
> that took.
> However, a question we are often asked is "which processors are using up all
> of my CPU?" From looking at tools like {{top}} we can see that NiFi is using
> a lot of CPU. And we can guess, based on the fact that Processor A spent 50
> minutes of Processing time over the past 5 minutes that Processor A is likely
> using a lot of resources. But we cannot really know for sure how much CPU it
> is using vs. disk/socket I/O waits, etc.
> This task will introduce more detailed metrics such as how many seconds of
> CPU time a processor has consumed, how much time it has spent reading/writing
> to the content repo, etc. These metrics should be exposed via the {{nifi.sh
> diagnostics}} command.
> We should make clear both how much of a Processor's time is spent using CPU,
> as well as what percentage of the total CPU used by NiFi was spent for a
> given Processor. This will significantly help understand the resource usage
> characteristics of a given component.
> However, tracking this may be expensive. So we should provide the ability to
> turn this feature on/off and ideally also allow for sampling of metrics and
> extrapolating out those numbers so that we can monitor these things only for
> a percentage of invocations and then give reasonable estimations based on
> that.
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