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  1. JDK
  2. JDK-8015774

Add support for multiple code heaps

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Details

    • Enhancement
    • Resolution: Fixed
    • P3
    • 9
    • 9
    • hotspot
    • None
    • b34
    • generic
    • generic

    Backports

      Description

        Support for multiple code heaps is required for AOT compilation. In addition, the instruction cache hit rate might be higher, if, e.g., a separate code heap is used for each tier and the meta-data that is attached to each compiled method is stored in a separate heap.

        Attachments

          1. Octane_TLB_32.pdf
            17 kB
            Tobias Hartmann
          2. OctaneCCSizes_32.pdf
            17 kB
            Tobias Hartmann
          3. OctaneSweepTime_32.pdf
            16 kB
            Tobias Hartmann
          4. SPECjbb2005_32.pdf
            18 kB
            Tobias Hartmann
          5. SPECjbb2005_TLB_32.pdf
            18 kB
            Tobias Hartmann
          6. SPECjbb2013_32.pdf
            17 kB
            Tobias Hartmann

          Issue Links

            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-8083029 Add support for multiple code heaps

            • P3 - Major loss of function.
            • Resolved
            relates to

            Bug - A problem which impairs or prevents the functions of the product. JDK-8058712 [TESTBUG] serviceability/dcmd/CodeCacheTest.java fails with java.lang.Exception

            • P2 - Crashes, loss of data, severe memory leak.
            • Resolved

            Enhancement - null JDK-8039498 Add iterators to GrowableArray

            • P3 - Major loss of function.
            • Resolved

            Enhancement - null JDK-8005885 enhance PrintCodeCache to print more data

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

            JEP - Java Enhancement Proposal JDK-8043304 JEP 197: Segmented Code Cache

            • P3 - Major loss of function.
            • Closed

            Enhancement - null JDK-8059611 Improve logic of 'Arguments::set_tiered_flags'

            • P3 - Major loss of function.
            • Closed

            Enhancement - null JDK-8058611 Investigate more efficient code cache sweeping

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

            Sub-task - The sub-task of the issue JDK-8314837 5 compiled/codecache tests ignore VM flags

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8086068 VM crashes with "-Xint -XX:+UseCompiler" options

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8271008 appcds/*/MethodHandlesAsCollectorTest.java tests time out because of excessive GC (CodeCache GC Threshold) in loom

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8059653 VM startup fails with 'Invalid code heap sizes' if -XX:ReservedCodeCacheSize is set

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8059390 code cache fills up for bigapps/Weblogic+medrec/nowarnings

            • P2 - Crashes, loss of data, severe memory leak.
            • Closed

            Bug - A problem which impairs or prevents the functions of the product. JDK-8059559 SIGSEGV at CodeHeap::allocate(unsigned int, bool)

            • P2 - Crashes, loss of data, severe memory leak.
            • Closed

            Enhancement - null JDK-8059137 MemoryPoolMXBeans for different code heaps should contain 'Code heap' in their names

            • P3 - Major loss of function.
            • Resolved

            Enhancement - null JDK-8328862 Remove unused GrowableArrayFilterIterator

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

            JEP - Java Enhancement Proposal JDK-8043304 JEP 197: Segmented Code Cache

            • P3 - Major loss of function.
            • Closed

            Activity

              People

                thartmann Tobias Hartmann
                anoll Albert Noll (Inactive)
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                Dates

                  Created:
                  Updated:
                  Resolved: