Details
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Bug
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Resolution: Fixed
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P4
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9
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b89
Backports
| Issue | Fix Version | Assignee | Priority | Status | Resolution | Resolved In Build |
|---|---|---|---|---|---|---|
| JDK-8142720 | emb-9 | Thomas Schatzl | P4 | Resolved | Fixed | team |
Description
G1CollectorPolicy::should_should_update_surv_rate_group_predictors() determines whether the survivor rate group predictors should be updated.
The current method uses CollectorState::last_young_gc() && !CollectorState::in_marking_window(), which means "only the gc between GC cleanup and mixed GC".
The first term is wrong, particularly when looking at the original code beforeJDK-7097567: it should be CollectorState::last_gc_was_young() && !CollectorState::in_marking_window(), i.e. all young gcs where no marking is running.
Fix this.
The current method uses CollectorState::last_young_gc() && !CollectorState::in_marking_window(), which means "only the gc between GC cleanup and mixed GC".
The first term is wrong, particularly when looking at the original code before
Fix this.
Attachments
Issue Links
- backported by
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JDK-8142720 G1CollectorPolicy::should_should_update_surv_rate_group_predictors() uses wrong predicate
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- Resolved
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- relates to
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JDK-8136677 Adaptive sizing for IHOP in G1
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- Resolved
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- Resolved
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