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  1. JDK
  2. JDK-8056253

nsk/monitoring: ThreadMXBean fails. getThreadAllocatedBytes() return value is not sufficiently accurate

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      Description

      The following test failures were spotted in the 2014-08-27 RT_Baseline nightly:

      nsk/monitoring/ThreadMXBean/GetThreadAllocatedBytes/doubleAllocationTest_directly_class

          This test failed due to "nsk.share.TestFailure: Failure! Expected
          getThreadAllocatedBytes() measurement for some thread at one
          moment could not be greater then similar measurement for the
          same thread at later moment. Thread allocates same amount of
          memory before each measurement. Excpected ~2 times difference.
          Recieved: 122920 and 290808"

      nsk/monitoring/ThreadMXBean/GetThreadAllocatedBytes/doubleAllocationTest_proxy_default_class

          This test failed due to "nsk.share.TestFailure: Failure! Expected
          getThreadAllocatedBytes() measurement for some thread at one
          moment could not be greater then similar measurement for the
          same thread at later moment. Thread allocates same amount of
          memory before each measurement. Excpected ~2 times difference.
          Recieved: 123192 and 291384

      nsk/monitoring/ThreadMXBean/GetThreadAllocatedBytes/doubleAllocationTest_server_custom_class

          This test failed due to "nsk.share.TestFailure: Failure! Expected
           getThreadAllocatedBytes() measurement for some thread at one
           moment could not be greater then similar measurement for the
           same thread at later moment. Thread allocates same amount of
           memory before each measurement. Excpected ~2 times difference.
           Recieved: 123320 and 290952

      RULE nsk/monitoring/ThreadMXBean/GetThreadAllocatedBytes/doubleAllocationTest_directly_class Exception nsk.share.TestFailure: Failure! Expected getThreadAllocatedBytes() measurement for some thread at one moment could not be greater then similar measurement for the same thread at later moment. Thread allocates same amount of memory before each measurement. Excpected ~2 times difference. Recieved: ... and ...

      RULE nsk/monitoring/ThreadMXBean/GetThreadAllocatedBytes/doubleAllocationTest_proxy_default_class Exception nsk.share.TestFailure: Failure! Expected getThreadAllocatedBytes() measurement for some thread at one moment could not be greater then similar measurement for the same thread at later moment. Thread allocates same amount of memory before each measurement. Excpected ~2 times difference. Recieved: ... and ...

      RULE nsk/monitoring/ThreadMXBean/GetThreadAllocatedBytes/doubleAllocationTest_server_custom_class Exception nsk.share.TestFailure: Failure! Expected getThreadAllocatedBytes() measurement for some thread at one moment could not be greater then similar measurement for the same thread at later moment. Thread allocates same amount of memory before each measurement. Excpected ~2 times difference. Recieved: ... and ...

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            • Assignee:
              stefank Stefan Karlsson
              Reporter:
              dcubed Daniel Daugherty
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              • Created:
                Updated:
                Resolved: