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  1. JDK
  2. JDK-8039566

Remove GC combinations deprecated in JDK 8

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Details

    • Enhancement
    • Resolution: Duplicate
    • P3
    • 9
    • 9
    • hotspot
    • gc

    Description

      For JDK 8 we deprecated some GC flags and flag combinations. For JDK 9 we should remove them.

      The following flags and flag combinations are affected:

      DefNew + CMS : -XX:-UseParNewGC -XX:+UseConcMarkSweepGC
      ParNew + SerialOld : -XX:+UseParNewGC
      ParNew + iCMS : -Xincgc
      ParNew + iCMS : -XX:+CMSIncrementalMode -XX:+UseConcMarkSweepGC
      DefNew + iCMS : -XX:+CMSIncrementalMode -XX:+UseConcMarkSweepGC -XX:-UseParNewGC
      CMS foreground : -XX:+UseCMSCompactAtFullCollection
      CMS foreground : -XX:+CMSFullGCsBeforeCompaction
      CMS foreground : -XX:+UseCMSCollectionPassing

      Attachments

        Issue Links

          duplicates

          JEP - Java Enhancement Proposal JDK-8044022 JEP 214: Remove GC Combinations Deprecated in JDK 8

          • P2 - Crashes, loss of data, severe memory leak.
          • Closed
          relates to

          Enhancement - null JDK-8003820 Deprecate untested and rarely used GC combinations

          • P3 - Major loss of function.
          • Resolved

          Enhancement - null JDK-8003822 Deprecate the incremental mode of CMS

          • P3 - Major loss of function.
          • Resolved

          Enhancement - null JDK-8027132 Print deprecation warning message for the flags controlling the CMS foreground collector

          • P3 - Major loss of function.
          • Resolved

          Enhancement - null JDK-8061308 Remove iCMS

          • P3 - Major loss of function.
          • Resolved

          Enhancement - null JDK-8064702 Remove the CMS foreground collector

          • P3 - Major loss of function.
          • Resolved

          Enhancement - null JDK-8065972 Remove support for ParNew+SerialOld and DefNew+CMS

          • P3 - Major loss of function.
          • Resolved

          Activity

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              brutisso Bengt Rutisson (Inactive)
              brutisso Bengt Rutisson (Inactive)
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              Dates

                Created:
                Updated:
                Resolved: