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  1. JDK
  2. JDK-8035945

Small Metaspace allocation requests can fail even though SmallChunks are available

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: P4
    • Resolution: Duplicate
    • Affects Version/s: 8
    • Fix Version/s: 9
    • Component/s: hotspot
    • Labels:
    • Subcomponent:
      gc

      Description

      The current Metaspace chunk allocation policy allocates into four SmallChunks before starting to allocate into MediumChunks. When the metaspace for a ClassLoader has once started to allocate into MediumChunks it will continue to allocate into MediumChunks and never consider the SmallChunks, even though the alloc requests might only need a SmallChunk.

      This might lead to unnecessary GCs and OOMEs.

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              • Assignee:
                jprovino Joseph Provino (Inactive)
                Reporter:
                stefank Stefan Karlsson
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                • Created:
                  Updated:
                  Resolved: