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https://issues.apache.org/jira/browse/LUCENE-9965?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17360359#comment-17360359
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Julie Tibshirani commented on LUCENE-9965:
------------------------------------------

The linked PR was just merged, which adds two new classes 
{{QueryProfilerIndexSearcher}} and {{ProfilerCollector}} to help debug search 
execution. I'm working on backporting it to 8.10 now. Thanks [~jdconradson] for 
leading this effort!

> Add tooling to introspect query execution time
> ----------------------------------------------
>
>                 Key: LUCENE-9965
>                 URL: https://issues.apache.org/jira/browse/LUCENE-9965
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Jack Conradson
>            Priority: Minor
>          Time Spent: 2h 50m
>  Remaining Estimate: 0h
>
> Based on the discussion from [this email 
> thread|https://lists.apache.org/thread.html/r7957a2d9ca38af45b1c370753b3c10542fd9faaf9bf95944c5224e12%40%3Cdev.lucene.apache.org%3E]
>  we could add a set of classes to compile timings for different pieces of a 
> query or multiple queries. This could be used to better debug changes in 
> performance moving forward.



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