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https://issues.apache.org/jira/browse/SOLR-17841?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18035257#comment-18035257
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Andrzej Bialecki commented on SOLR-17841:
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[~epugh] perhaps you could try using the benchmark module for this? I found it
useful for testing the ExitableDirectoryReader, it's awkward at times but other
than that it simplifies a lot the setup and the test data generation. Take a
look at `ExitableDirectoryReaderSearch`.
> Investigate multithreaded search performance bottlenecks
> --------------------------------------------------------
>
> Key: SOLR-17841
> URL: https://issues.apache.org/jira/browse/SOLR-17841
> Project: Solr
> Issue Type: Improvement
> Reporter: Ishan Chattopadhyaya
> Priority: Blocker
> Fix For: 10.0
>
>
> Ever since multithreaded search (SOLR-13350) was introduced, there has been
> not much effort to benchmark the performance benefit or investigate the
> performance bottlenecks. Anecdotally, it is not faster than single threaded
> execution.
> Thanks to [~kevinliang01] [~liangkaiwen] [~liangkw16] and [~dsmiley] for
> bringing this up, yesterday on a dense vector working group meeting.
> I'm marking this as a release 10.0 blocker, because it is embarrassing to be
> releasing with such a gaping hole.
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