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  1. JDK
  2. JDK-8044031

Test gc/g1/TestStringDeduplicationMemoryUsage.java is still failing due to unexpected memory usage

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: P3
    • Resolution: Duplicate
    • Affects Version/s: 8u20
    • Fix Version/s: None
    • Component/s: hotspot
    • Subcomponent:
      gc

      Description

      Test gc/g1/TestStringDeduplicationMemoryUsage.java failed with following exception during PIT for 8u20-b16:

      java.lang.Exception: Unexpected memory usage, heapMemoryUsageWithDedup should be less or equal to heapMemoryUsageWithDedupExpected
      at TestStringDeduplicationTools.testMemoryUsage(TestStringDeduplicationTools.java:520)
      at TestStringDeduplicationMemoryUsage.main(TestStringDeduplicationMemoryUsage.java:34)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.lang.reflect.Method.invoke(Method.java:483)
      at com.sun.javatest.regtest.MainWrapper$MainThread.run(MainWrapper.java:94)
      at java.lang.Thread.run(Thread.java:745)

      Memory usage summary:
         heapMemoryUsageWithoutDedup: 1752176
         heapMemoryUsageWithDedup: 655048
         heapMemoryUsageWithDedupExpected: 632288

      I was able to reproduce this issue on the same host, but it happened intermittently - it may take from 1 to 10 tries before test fail.

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              Assignee:
              Unassigned Unassigned
              Reporter:
              fzhinkin Filipp Zhinkin
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