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  1. JDK
  2. JDK-8005885

enhance PrintCodeCache to print more data

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Details

    • Enhancement
    • Status: Resolved
    • P4
    • Resolution: Fixed
    • hs25, 9, 10
    • 19
    • hotspot
    • b12
    • generic
    • generic

    Description

      Currently we only print:

      CodeCache:
      nmethod dependency checking time 0.037552
       #944 live = 3681K (hdr 4%, loc 2%, code 74%, stub 1%, [oops 0%, data 0%, pcs 5%])
       #92 dead = 247K (hdr 7%, loc 6%, code 46%, stub 3%, [oops 0%, data 0%, pcs 12%])

      We should enhance the machinery to:

      - print live and dead method information for all tiers
      - print absolute numbers instead of percentages
      - print size of template interpreter code
      - print size of stub code (maybe number of stubs?)
      - maybe print percentage of code cache memory used for tiers/interpreter/stubs

      Attachments

        Issue Links

          duplicates

          Enhancement - null JDK-8028171 Implement proper logging of full code cache behavior

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

          Enhancement - null JDK-8015774 Add support for multiple code heaps

          • P3 - Major loss of function.
          • Resolved

          Enhancement - null JDK-8198691 CodeHeap State Analytics

          • 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
          links to

          Commit Commit openjdk/jdk/b6843a16

          Review Review openjdk/jdk/7389

          Activity

            People

              yftsai Yi-Fan Tsai
              twisti Christian Thalinger
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              Dates

                Created:
                Updated:
                Resolved: