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https://issues.apache.org/jira/browse/CASSANDRA-19676?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17851701#comment-17851701
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Ekaterina Dimitrova commented on CASSANDRA-19676:
-------------------------------------------------

We were just running tests for another patch.

Seems like some of the failures match what you see here:

[https://app.circleci.com/pipelines/github/blerer/cassandra/413/workflows/fdcfda35-d2f9-4d15-8c76-f6b381b09991]

I guess something went south with some of the latest patches committed to trunk

> Stream processing for StorageProxy::updateCoordinatorWriteLatencyTableMetric
> ----------------------------------------------------------------------------
>
>                 Key: CASSANDRA-19676
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-19676
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Legacy/Core
>            Reporter: Sam Lightfoot
>            Assignee: Sam Lightfoot
>            Priority: Normal
>             Fix For: 5.x
>
>         Attachments: image-2024-06-02-17-25-25-071.png
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> On profiling a write-heavy workload (90% writes) using easy-cass-stress, it 
> became very clear StorageProxy::updateCoordinatorWriteLatencyTableMetric was 
> a hot path that ~15% of the CPU cycles of 
> ModificationStatement::executeWithoutCondition were taken up by (see attached 
> async-profiler image).
> We should convert this stream to a simple for loop, as has been discussed 
> recently on the mail list.



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