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  1. Java Mission Control
  2. JMC-7195

GC confguration with GC Flags

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    Details

    • Type: Enhancement
    • Status: Resolved
    • Priority: P4
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 8.1.0
    • Component/s: Mission Control Client
    • Labels:
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      Description

      From Brice Dutheil:

      Motivation

      When turning the GC flag knobs, it is useful to be able to quickly see
      the GC configuration, however the GC configuration page only show 3
      events, if one wants to have a look at flags he has to either check
      the command line or inspect the JVM internal page to find relevant
      GC flags. Therefore having these flags right there is useful to get
      a quick picture of the current configuration.

      Current limitations

      At this time the selected flags depends on the GC algorithm which is
      derived from the name of the old collector name. This is simple,
      however it prevents to identify EpsilonGC because whose old
      collector name is SerialOld, which is the same as SerialGC.

      There are some global flags in gc/shared/gc_globals.hpp that
      I didn't include as I didn't use most of them. I'm not sure these
      flags are seen much in the wild.

      Remarks

      As mentionned above the use of the OldCollector name may not be the
      best choice, I would like to refactor this part to use the Use*GC
      flags instead. I am a bit unsure at this time how to use the
      existing API.

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              Assignee:
              hirt Marcus Hirt
              Reporter:
              hirt Marcus Hirt
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                Created:
                Updated:
                Resolved: