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  1. JDK
  2. JDK-8057000

Increase parallelism in String deduplication fixup

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    • Icon: Enhancement Enhancement
    • Resolution: Not an Issue
    • Icon: P4 P4
    • tbd
    • 8u40, 9
    • hotspot
    • gc

      In CRM Fuse, string deduplication table fixup takes a significant amount of time (~25-30% of average gc pause time).

      One interesting thing noticed is that only around half of the threads actually do work. This may be due to startup/synchronization taking so long for many threads.

      This is also somewhat similar to the problem described in JDK-8040120.

      One option to fix this is to merge string deduplication work with other parallel tasks in the "Other" group if possible.

            Unassigned Unassigned
            tschatzl Thomas Schatzl
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