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Type: Enhancement
Resolution: Fixed
Priority: P4
Fix Version/s: 26
Affects Version/s: None
Component/s: hotspot
Labels:

Subcomponent:
gc
Resolved In Build:
b22

As G1 does not instantiate the AdaptiveSizePolicy class, these JVM flags are no-ops for G1:
UseGCOverheadLimit
GCTimeLimit
GCHeapFreeLimit

UseGCOverheadLimit and tuning these flags is an effective way to prevent GC thrashing by throwing OOME early. Production users using other garbage collectors have already relied on UseGCOverheadLimit. It is desirable to make UseGCOverheadLimit also work in G1.

duplicates

JDK-8194821 G1 does not implement GCOverheadLimit functionality

Closed

is blocked by

JDK-8212206 Refactor AdaptiveSizePolicy to separate out code related to GC overhead

Resolved

JDK-8370325 G1: Disallow GC for TLAB allocation

Resolved

relates to

JDK-8308983 Let UseGCOverheadLimit work independently of UseAdaptiveSizePolicy in parallel GC

Closed

links to

Commit(master) openjdk/jdk/3d2ce804

Review(master) openjdk/jdk/27950

(1 links to)

Release Note: G1: Support UseGCOverheadLimit

Resolved

Thomas Schatzl

Assignee:: Thomas Schatzl
Reporter:: Man Cao
Votes:: 0 Vote for this issue
Watchers:: 6 Start watching this issue

Created:: 2018-10-11 14:46
Updated:: Yesterday 02:02
Resolved:: 2025-10-26 23:59

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