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  1. JDK
  2. JDK-8049536

os::commit_memory on Solaris uses aligment_hint as page size

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Details

    • Bug
    • Resolution: Fixed
    • P4
    • 9
    • 9
    • hotspot
    • gc
    • b33
    • sparc
    • solaris

    Backports

      Description

        os::commit_memory takes a size_t `alignment_hint` as parameter. This parameter is used differently on different operating systems: it is ignored on all operating system except for Solaris. For Solaris, the hint is used for selecting the large page size. In a special case, the hint is interpreted as the *exact* page size.

        This problem had previously been hidden because due to various alignments of heap sizes and generation sizes always made sure that we ended up with a alignment_hint of 4 MB by default, which also happens to be a valid page size.

        The bug can be triggered by running:
        java -Xms32m -Xmx128m -XX:LargePageSizeInBytes=256m -version

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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-8078166 os::commit_memory on Solaris uses aligment_hint as page size

            • 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-8079933 os::commit_memory on Solaris uses aligment_hint as page size

            • 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-8083414 os::commit_memory on Solaris uses aligment_hint as page size

            • 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-8086485 os::commit_memory on Solaris uses aligment_hint as page size

            • 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-8137662 os::commit_memory on Solaris uses aligment_hint as page size

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8049864 TestParallelHeapSizeFlags fails with unexpected heap size

            • P3 - Major loss of function.
            • Resolved
            duplicates

            Bug - A problem which impairs or prevents the functions of the product. JDK-8027842 Kitchensink on Solaris gets "Attempt to use MPSS" failed

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

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                ehelin Erik Helin
                ehelin Erik Helin
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                  Created:
                  Updated:
                  Resolved: