You are viewing a plain text version of this content. The canonical link for it is here.

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

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

     [ https://issues.apache.org/jira/browse/BEAM-12127?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kenneth Knowles updated BEAM-12127:
-----------------------------------
    Status: Open  (was: Triage Needed)

> 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
>            Priority: P2
>
> 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.



--
This message was sent by Atlassian Jira
(v8.3.4#803005)