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  1. JDK
  2. JDK-8253064

monitor list simplifications and getting rid of TSM

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Details

    • Enhancement
    • Status: Resolved
    • P4
    • Resolution: Fixed
    • 16
    • 16
    • hotspot
    • b24

    Description

      Erik O. has some ideas for:

      - simplifying the ObjectMonitor lists
      - getting rid of ObjectMonitor Type Stable Memory (TSM)

      He developed those changes as part of his work on:

          JDK-8247281 migrate ObjectMonitor::_object to OopStorage

      and I separated that work into parts. This bug covers part3
      of Erik O's patch.

      Attachments

        Issue Links

          duplicates

          Bug - A problem which impairs or prevents the functions of the product. JDK-8236273 clarify use and role of clear() and Recycle() in ObjectMonitor

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

          Enhancement - null JDK-7021979 rapid sustained monitor circulation causes asymptotic increase in # of extant monitors

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

          Enhancement - null JDK-8134151 Tune object monitor provisioning

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

          Enhancement - null JDK-8238370 ObjectSynchronizer::om_release() could be simplified

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

          Enhancement - null JDK-8238371 ObjectSynchronizer::om_alloc() does not have to be public

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

          Bug - A problem which impairs or prevents the functions of the product. JDK-8256237 Zero: non-PCH build fails after JDK-8253064

          • P3 - Major loss of function.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. JDK-8257975 Regression ~ 2.5% in SwingMark.Table after JDK-8253064

          • P3 - Major loss of function.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. JDK-8259008 ArithmeticException was thrown at "Monitor Cache Dump" on HSDB

          • 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-8259349 -XX:AvgMonitorsPerThreadEstimate=1 does not work right

          • 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-8263864 ~17% regression for DaCapo h2 after JDK-8253064

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

          Enhancement - null JDK-8256303 revisit ObjectMonitor padding between fields

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

          Enhancement - null JDK-8256302 releasing oopStorage when deflating allows for faster deleting

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

          Enhancement - null JDK-8247281 migrate ObjectMonitor::_object to OopStorage

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

          Enhancement - null JDK-8256301 ObjectMonitor::is_busy() should return bool

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

          Enhancement - null JDK-8256306 ObjectMonitor::_contentions field should not be 'jint'

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

          Enhancement - null JDK-8256307 cleanup AvgMonitorsPerThreadEstimate and _in_use_list_ceiling types

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

          Enhancement - null JDK-8256241 replace MonitorDeflation_lock with a semaphore

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

          Bug - A problem which impairs or prevents the functions of the product. JDK-8257521 runtime/logging/MonitorInflationTest.java crashed in MonitorList::unlink_deflated

          • P3 - Major loss of function.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. JDK-8273107 RunThese24H times out with "java.lang.management.ThreadInfo.getLockName()" is null

          • P3 - Major loss of function.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. JDK-8254335 logging/logStream.hpp includes memory/resourceArea.hpp but doesn't need it

          • 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-8256239 monitorDeflationThread.cpp missing include of universe.hpp

          • 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-8283674 Pad ObjectMonitor allocation size to cache line size

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

          Enhancement - null JDK-8225631 Consider replacing muxAcquire/Release with PlatformMonitor

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

          Enhancement - null JDK-8226416 MonitorUsedDeflationThreshold can cause repeated async deflation requests

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

          Enhancement - null JDK-8256304 should MonitorUsedDeflationThreshold be experimental or diagnostic

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

          Enhancement - null JDK-8277180 Intrinsify recursive ObjectMonitor locking for C2 x64 and A64

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

          Enhancement - null JDK-8281043 Intrinsify recursive ObjectMonitor locking for PPC64

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

          Enhancement - null JDK-8281450 Remove unnecessary operator new and delete from ObjectMonitor

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

          Commit Commit openjdk/jdk/2e19026d

          Review Review openjdk/jdk/642

          Activity

            People

              eosterlund Erik Österlund
              dcubed Daniel Daugherty
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              Dates

                Created:
                Updated:
                Resolved: