JDK-8369810 : Release Note: Serial: Expand Eden Space Beyond SurvivorRatio
  • Type: Sub-task
  • Component: hotspot
  • Sub-Component: gc
  • Affected Version: 26
  • Priority: P4
  • Status: Open
  • Resolution: Unresolved
  • Submitted: 2025-10-14
  • Updated: 2025-10-17
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JDK 26
26Unresolved
Description
The size of eden and survivor spaces inside of a young generation is governed by `SurvivorRatio`. It can change whenever the young generation size is updated.

After this change, if the heap is almost full, we will try everything to expand eden in order to satisfy the allocation request. This can cause eden-size to grow beyond the limit determined by `SurvivorRatio`.