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  1. JDK
  2. JDK-8226411

C2: Avoid memory barriers around off-heap unsafe accesses

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Details

    • Enhancement
    • Resolution: Fixed
    • P3
    • 14
    • 11, 13, 14
    • hotspot
    • b27

    Description

      Memory barriers around off-heap accesses severely affect performance (as reported by JDK-8224182).

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          duplicates

          Bug - A problem which impairs or prevents the functions of the product. JDK-8224182 [Performance] sun.misc.Unsafe.[put|get]* suffer from redundant memory barriers

          • P3 - Major loss of function.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. JDK-8235636 gc/shenandoah/compiler/TestUnsafeOffheapSwap.java fails after JDK-8226411

          • P2 - Crashes, loss of data, severe memory leak.
          • Resolved

          Enhancement - null JDK-8224996 Investigate memory access C2 optimizations

          • P3 - Major loss of function.
          • Closed

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              vlivanov Vladimir Ivanov
              vlivanov Vladimir Ivanov
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              Dates

                Created:
                Updated:
                Resolved: