[GitHub] [kafka] ijuma opened a new pull request #11739: MINOR: Reduce scala compilation time by 15% via scalac backend parallelism

[GitBox <gi...@apache.org>]

ijuma opened a new pull request #11739:
URL: https://github.com/apache/kafka/pull/11739


   Introduce `maxScalacThreads` and set the default to the lowest of `8`
   and the number of processors available to the JVM. The number `8` was
   picked empirically, the sweet spot is between 6 and 10.
   
   On my desktop, `./gradlew clean core:compileScala core:compileTestScala`
   improved from around 60s to 51s ( with this change.
   
   While at it, we improve the build output to include more useful
   information at the start: build id, max parallel forks, max scala
   threads and max test retries.
   
   ### Committer Checklist (excluded from commit message)
   - [ ] Verify design and implementation 
   - [ ] Verify test coverage and CI build status
   - [ ] Verify documentation (including upgrade notes)
   


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[GitHub] [kafka] ijuma merged pull request #11739: MINOR: Reduce cold scala compilation time by 15% via scalac backend parallelism

[GitBox <gi...@apache.org>]

ijuma merged pull request #11739:
URL: https://github.com/apache/kafka/pull/11739


   


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