Uploaded image for project: 'JDK'
  1. JDK
  2. JDK-8264008

Incorrect metaspace statistics after JEP 387 when UseCompressedClassPointers is off

    XMLWordPrintable

Details

    • Bug
    • Status: Resolved
    • P4
    • Resolution: Fixed
    • 16, 17
    • 17
    • hotspot
    • b15

    Description

      Reproduce:
       - run jdk/jfr/event/gc/heapsummary/TestHeapSummaryEventDefNewSerial.java with -XX:-UseCompressedClassPointers

      For example, here is the incorrect metaspace statistics before the fix:
      ```
      Event:jdk.MetaspaceSummary {
        startTime = 10:35:24.762
        gcId = 3
        when = "Before GC"
        gcThreshold = 21.0 MB
        metaspace = {
          committed = 10.3 MB
          used = 10.2 MB
          reserved = 16.0 MB
        }
        dataSpace = {
          committed = 10.3 MB
          used = 10.2 MB
          reserved = 16.0 MB
        }
        classSpace = {
          committed = 10.3 MB
          used = 10.2 MB
          reserved = 16.0 MB
        }
      }
      ```

      Attachments

        Issue Links

          Activity

            People

              jiefu Jie Fu
              jiefu Jie Fu
              Votes:
              0 Vote for this issue
              Watchers:
              3 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved: