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  1. JDK
  2. JDK-8322475

Extend printing for System.map

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Details

    • Enhancement
    • Resolution: Fixed
    • P4
    • 24
    • 22
    • hotspot
    • b05
    • linux

    Description

      Make System.map and System.dump_map drastically more useful by adding:
      - the actual memory used per mapping (RSS)
      - the actual page size of the mapping
      - THP state (used, advised, eligible, forbidden)
      - the commit state
      - swap state

      Also, provide a summary for:
      - total RSS
      - total size of hugetlb memory
      - how much memory uses THPs
      - how much memory had been swapped out
      - how much memory was committed

      Attachments

        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. JDK-8335643 serviceability/dcmd/vm tests fail for ZGC after JDK-8322475

          • 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-8335710 serviceability/dcmd/vm/SystemDumpMapTest.java and SystemMapTest.java fail on Linux Alpine after 8322475

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

          Enhancement - null JDK-8318636 Add jcmd to print annotated process memory map

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

          Enhancement - null JDK-8334026 Provide a diagnostic PrintMemoryMapAtExit switch on Linux

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

          Commit Commit openjdk/jdk/8aaec37a

          Review Review openjdk/jdk/17158

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            People

              stuefe Thomas Stuefe
              stuefe Thomas Stuefe
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              Dates

                Created:
                Updated:
                Resolved: