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  1. JDK
  2. JDK-8225229

Shenandoah: trim down default number of GC threads

    Details

    • Type: Enhancement
    • Status: Resolved
    • Priority: P3
    • Resolution: Fixed
    • Affects Version/s: 8-shenandoah, 11-shenandoah, 13
    • Fix Version/s: 13
    • Component/s: hotspot
    • Subcomponent:
      gc
    • Resolved In Build:
      b24

      Backports

        Description

        We can trim down the default number of GC threads to make Shenandoah more cooperative with the application and OS scheduler. We routinely trim down concurrent threads to 2..4 when deploying, and better default would make deployment stories simpler.

        NB: ZGC sets 0.6*CPU for parallel and 0.125*CPU for concurrent threads.

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                • Assignee:
                  shade Aleksey Shipilev
                  Reporter:
                  shade Aleksey Shipilev
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                  • Created:
                    Updated:
                    Resolved: