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  1. JDK
  2. JDK-8205676

ZGC: Remove TLAB allocations in relocation path

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    • b20

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        During Java-thread aided relocation, ZGC tries to use the TLAB to allocate the new object. However, this interacts badly with JEP 331: Low-Overhead Heap Profiling, as it distorts the profiling statistics. I propose we remove the use of the TLAB in the relocation path, essentially changing a thread-local pointer bump to a uncontended CPU-local CAS.

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            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8206032 ZGC: Remove TLAB allocations in relocation path

            • P3 - Major loss of function.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8206624 ZGC: Remove TLAB allocations in relocation path

            • P3 - Major loss of function.
            • Resolved

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