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https://issues.apache.org/jira/browse/LUCENE-9165?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17022754#comment-17022754
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Dawid Weiss commented on LUCENE-9165:
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LGTM, thanks for testing, Robert. I remember ES had some fancy way of telling
hyperthreaded cores from physical CPUs - don't know if it's worth complicating
the script though (those who have such fancy machines can always override in
~/gradle.properties?).
https://github.com/elastic/elasticsearch/blob/d7ce4f203d0685f83e3480a63f264f73f0171d4e/buildSrc/src/main/java/org/elasticsearch/gradle/info/GlobalBuildInfoPlugin.java#L188-L228
> change generate-defaults.gradle not to cap testsJvms at 4
> ---------------------------------------------------------
>
> Key: LUCENE-9165
> URL: https://issues.apache.org/jira/browse/LUCENE-9165
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Robert Muir
> Priority: Major
> Attachments: LUCENE-9165.patch
>
>
> {code}
> def cpus = Runtime.runtime.availableProcessors()
> def testsJvms = (int) Math.max(1d, Math.min(cpus * 0.5d, 4))
> {code}
> Dividing by 2 is still good (hyperthreading is still a thing), but the
> artificial cap of 4 is a bottleneck if the hardware has more available.
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