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  1. JDK
  2. JDK-8030177

G1: Enable TLAB resizing

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Details

    • Enhancement
    • Resolution: Fixed
    • P3
    • 9
    • hs24, hs25
    • hotspot
    • gc
    • b03

    Backports

      Description

        Currently G1 does not resize TLABs. This reduces performance for G1 since it can lead to contention in the allocation path.

        Performance test show 2-3% throughput improvement when resizing TLABs up to the humongous threshold.

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            backported by

            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-8037512 G1: Enable TLAB resizing

            • 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-8045258 G1: Enable TLAB resizing

            • 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-8053258 G1: Enable TLAB resizing

            • P3 - Major loss of function.
            • Resolved
            duplicates

            Enhancement - null JDK-7189528 Use containing heap or generation to bound PLAB sizes suggested by PLABStats instances

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Closed

            Enhancement - null JDK-8028312 Investigate g1 TLAB size

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Closed

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                brutisso Bengt Rutisson (Inactive)
                brutisso Bengt Rutisson (Inactive)
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                  Created:
                  Updated:
                  Resolved: