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  1. JDK
  2. JDK-8233842

CSR for JEP 366: Deprecate the ParallelScavenge + SerialOld GC Combination

    Details

    • Type: CSR
    • Status: Closed
    • Priority: P4
    • Resolution: Approved
    • Fix Version/s: 14
    • Component/s: hotspot
    • Labels:
      None
    • Subcomponent:
      gc
    • Compatibility Kind:
      behavioral
    • Compatibility Risk:
      minimal
    • Compatibility Risk Description:
      The only difference to before on use is an additional deprecation message.
    • Interface Kind:
      add/remove/modify command line option
    • Scope:
      JDK

      Description

      Summary

      Deprecate the command line option UseParallelOldGC.

      Problem

      For JDK-8229492: JEP 366: Deprecate the ParallelScavenge + SerialOld GC Combination we deprecate the UseParallelOldGC option to prepare for potential future removal.

      Solution

      Deprecate the UseParallelOldGC command line option.

      Specification

         --- old/src/hotspot/share/runtime/arguments.cpp  2019-11-05 11:03:18.881862069 +0100
         +++ new/src/hotspot/share/runtime/arguments.cpp  2019-11-05 11:03:18.541851522 +0100
         @@ -528,6 +528,7 @@
         { "CompactFields",                JDK_Version::jdk(14), JDK_Version::jdk(15), JDK_Version::jdk(16) },
         { "MonitorBound",                 JDK_Version::jdk(14), JDK_Version::jdk(15), JDK_Version::jdk(16) },
         { "G1RSetScanBlockSize",          JDK_Version::jdk(14), JDK_Version::jdk(15), JDK_Version::jdk(16) },
      +  { "UseParallelOldGC",             JDK_Version::jdk(14), JDK_Version::jdk(15), JDK_Version::jdk(16) },
      
         // --- Deprecated alias flags (see also aliased_jvm_flags) - sorted by obsolete_in then expired_in:
         { "DefaultMaxRAMFraction",        JDK_Version::jdk(8),  JDK_Version::undefined(), JDK_Version::undefined() },

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              • Assignee:
                tschatzl Thomas Schatzl
                Reporter:
                tschatzl Thomas Schatzl
                Reviewed By:
                Leo Korinth, Stefan Johansson
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                Dates

                • Created:
                  Updated:
                  Resolved: