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  1. JDK
  2. JDK-8060025

Object copy time regressions after JDK-8031323 and JDK-8057536

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Details

    • Bug
    • Resolution: Fixed
    • P4
    • 9
    • 8u40, 9
    • hotspot
    • gc
    • b45

    Backports

      Description

        Object copy times regress with SPECjbb2005 (and any other workload that mostly copies around data in the young generation) by a few percent.

        JDK-8031323 and JDK-8057536 seem to be the problem.

        Change copy_to_survivor_space() and friends to fix this.

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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-8076063 Object copy time regressions after JDK-8031323 and JDK-8057536

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • 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-8077463 Object copy time regressions after JDK-8031323 and JDK-8057536

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • 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-8083164 Object copy time regressions after JDK-8031323 and JDK-8057536

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • 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-8086448 Object copy time regressions after JDK-8031323 and JDK-8057536

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • 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-8137653 Object copy time regressions after JDK-8031323 and JDK-8057536

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8052167 G1 wrongly counts PLABs not allocated in the originally intended allocation "generation"

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

            Enhancement - null JDK-7163196 G1: Use two arrays for the fast cset test, put region type information in the arrays

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8078669 G1 applies SurvivorAlignmentInBytes to both survivor and old gen

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

            Enhancement - null JDK-8067920 Rename InCSetState to something more understandable

            • P5 - Cosmetic problem like misspelt words or misaligned text.
            • Closed

            Bug - A problem which impairs or prevents the functions of the product. JDK-8068036 assert(is_available(index)) failed in G1 cset

            • P1 - Blocks development and/or testing work, production could not run.
            • Resolved

            Enhancement - null JDK-8057536 Refactor G1 to allow context specific allocations

            • P3 - Major loss of function.
            • Resolved

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                Unassigned Unassigned
                tschatzl Thomas Schatzl
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                Dates

                  Created:
                  Updated:
                  Resolved: