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Posted to issues@beam.apache.org by "Sam Whittle (Jira)" <ji...@apache.org> on 2021/04/08 12:40:00 UTC

[jira] [Created] (BEAM-12127) Reduce counter overhead in PCollectionConsumerRegistry.accept

Sam Whittle created BEAM-12127:
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             Summary: Reduce counter overhead in PCollectionConsumerRegistry.accept
                 Key: BEAM-12127
                 URL: https://issues.apache.org/jira/browse/BEAM-12127
             Project: Beam
          Issue Type: Bug
          Components: java-fn-execution
            Reporter: Sam Whittle
            Assignee: Sam Whittle


DelegatingCounter.inc shows up as 21% of cpu on nexmark query 2 benchmark under PCollectionConsumerRegistry.accept

2% is actual counter incrementing, but the majority is the delegation of DelegatingCounter which involves looking up thread-local state and then getting the counter for the name from the counter container.  However in this case the counter container is known and  can just be bound when constructing the counter instaed of using DelegatingCounter.



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