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  1. JDK
  2. JDK-8057781

Start mixed GC on the next GC after marking cycle completed

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    • Subcomponent:
      gc

      Description

      The G1 collection cycle does an additional young-only GC between the cleanup pause and the first mixed gc. In some cases, in relatively tight heaps, this makes the mixed gcs start too late, causing to-space overflows and in the end results in undesired full gcs.

      There does not seem to be a good reason to do the young-only gc after GC cleanup at all.

      Fix this to switch to mixed gcs right after the marking cycle completes.

      An "intermediate" fix could be to decrease the IHOP slightly.

      A program that shows this problem is e.g. CRM Fuse.

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              Assignee:
              Unassigned Unassigned
              Reporter:
              tschatzl Thomas Schatzl
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                Created:
                Updated: