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  1. JDK
  2. JDK-8318562

Computational test more than 2x slower when AVX instructions are used

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    • b25
    • x86
    • Fix failed

    Backports

      Description

        Attached JMH microbenchmark is slower when AVX instructions are used vs -XX:UseAVX=0

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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-8320508 Computational test more than 2x slower when AVX instructions are used

            • 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-8322411 Computational test more than 2x slower when AVX instructions are used

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

            Enhancement - null JDK-8323116 [REDO] Computational test more than 2x slower when AVX instructions are used

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8322479 Regression in SPECjvm2008-MonteCarlo-ParGC on Linux-x64

            • P3 - Major loss of function.
            • Closed

            Sub-task - The sub-task of the issue JDK-8322985 [BACKOUT] 8318562: Computational test more than 2x slower when AVX instructions are used

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

            Commit Commit openjdk/jdk17u-dev/9a104e08

            Commit Commit openjdk/jdk21u/0941f2ce

            Commit Commit openjdk/jdk/0881f2b0

            Review Review openjdk/jdk17u-dev/2016

            Review Review openjdk/jdk21u/381

            Review Review openjdk/jdk/16701

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                sviswanathan Sandhya Viswanathan
                kvn Vladimir Kozlov
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                  Created:
                  Updated:
                  Resolved: