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  1. JDK
  2. JDK-8131668

Contention on allocating new TLABs constrains throughput on G1

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    • gc

      Some benchmarks (Stress BPM, possibly SPECjbb*) indicate that there is a significant amount of contention on the freelist_lock to retrieve new mutator allocation regions, particularly if the TLAB size is already quite large and the number of threads is very high.

      Look at possibilities to avoid this overhead.

        1. SPL4.java
          4 kB
        2. jsr166.jar
          640 kB
        3. tlab
          2 kB

            Unassigned Unassigned
            tschatzl Thomas Schatzl
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              Created:
              Updated: