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  1. JDK
  2. JDK-8280705

Parallel: Full gc mark stack draining should prefer to make work available to other threads

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    • gc
    • b08

    Description

      Similar to G1 in JDK-8280396, Full gc mark stack handling threads may work on the overflow queue exclusively starving other threads.

      Bigramtester 20gb currently gives the following times for the first two full gcs on 5 runs:

      1) 6-9000ms (high variance)
      2) 3-4500ms (high variance)

      With the prototype changes:

      1) 4600ms (variance ~ 2%)
      2) 1500ms (variance ~ 1%)

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              tschatzl Thomas Schatzl
              tschatzl Thomas Schatzl
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