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  1. JDK
  2. JDK-8270317

Large Allocation in CipherSuite

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    • Subcomponent:
    • Resolved In Build:
      b08
    • CPU:
      generic
    • OS:
      generic

      Backports

        Description

        We have identified large number of allocations in CipherSuites[1]. The root cause for the allocations is that in the `CipherSuite.values` call in `nameof` and `valueof` functions. These functions are called by the SSLAlgorithmDecomposer and in SSLEngineImpl. The enumeration values functions clones the array before returning. A previous discussion on the compiler-dev channel[2] describes why the values function returns a clone. We would like to propose that the CipherSuite.values be stored in a `private static final` field. This would prevent the need to clone the array for each lookup across the enum.

        1 : https://github.com/openjdk/jdk/blob/master/src/java.base/share/classes/sun/security/ssl/CipherSuite.java
        2 : http://mail.openjdk.java.net/pipermail/compiler-dev/2018-July/012242.html

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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-8273567 Large Allocation in CipherSuite

            • 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-8273568 Large Allocation in CipherSuite

            • 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-8273569 Large Allocation in CipherSuite

            • 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-8273570 Large Allocation in CipherSuite

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

            Commit Commit openjdk/jdk11u-dev/ae0d088e

            Commit Commit openjdk/jdk13u-dev/0b2d2a16

            Commit Commit openjdk/jdk15u-dev/5c9dc7bb

            Commit Commit openjdk/jdk17u/cef269f8

            Commit Commit openjdk/jdk/e627caec

            Review Review openjdk/jdk11u-dev/312

            Review Review openjdk/jdk13u-dev/257

            Review Review openjdk/jdk15u-dev/95

            Review Review openjdk/jdk17u/52

            Review Review openjdk/jdk/4783

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                Assignee:
                cverghese Clive Verghese
                Reporter:
                cverghese Clive Verghese
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