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  1. JDK
  2. JDK-8048085

Aborting marking just before remark results in useless additional clearing of the next mark bitmap

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    • gc
    • b26

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      Description

        If before a full GC (that is already in the vm operation queue) a GC Remark happens, the VM continues to clear the next bitmap although it has already been cleared when aborting it.

        This is additional, needless work. Guard the call to _cm->clearNextBitmap() in ConcurrentMarkThread::run() with the appropriate condition.

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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-8051705 Aborting marking just before remark results in useless additional clearing of the next mark bitmap

            • 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-8056676 Aborting marking just before remark results in useless additional clearing of the next mark bitmap

            • 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-8063377 Aborting marking just before remark results in useless additional clearing of the next mark bitmap

            • 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-8070857 Aborting marking just before remark results in useless additional clearing of the next mark bitmap

            • 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-8054808 Bitmap verification sometimes fails after Full GC aborts concurrent marking

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

            Enhancement - null JDK-7098512 G1: Do not clear the next marking bitmap at the start of a Full GC

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

            Enhancement - null JDK-8038423 G1: Decommit memory within the heap

            • P3 - Major loss of function.
            • Resolved

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                tschatzl Thomas Schatzl
                tschatzl Thomas Schatzl
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                  Updated:
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