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  1. JDK
  2. JDK-8232001

ZGC: Ignore metaspace GC threshold until GC is warm

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    Details

    • Type: Enhancement
    • Status: Resolved
    • Priority: P4
    • Resolution: Fixed
    • Affects Version/s: 14
    • Fix Version/s: 14
    • Component/s: hotspot
    • Labels:
    • Subcomponent:
      gc
    • Resolved In Build:
      b20

      Description

      As reported here:

      https://mail.openjdk.java.net/pipermail/zgc-dev/2019-September/000736.html

      The ZDirector heuristics can get of to a bad start if the statistics is contaminated by early "Metaspace GC Threshold" GC requests. To avoid this, we could simply ignore such requests until the GC is warm, at the potential cost of expanding metaspace a bit more during startup.

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            Assignee:
            pliden Per Liden
            Reporter:
            pliden Per Liden
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              Updated:
              Resolved: