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Type:
Enhancement
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Resolution: Fixed
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Priority:
P4
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Affects Version/s: 8u20, 9
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Component/s: hotspot
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b08
| Issue | Fix Version | Assignee | Priority | Status | Resolution | Resolved In Build |
|---|---|---|---|---|---|---|
| JDK-8045277 | 8u25 | Thomas Schatzl | P4 | Resolved | Fixed | b01 |
| JDK-8038248 | 8u20 | Thomas Schatzl | P4 | Resolved | Fixed | b08 |
| JDK-8053393 | emb-8u26 | Thomas Schatzl | P4 | Resolved | Fixed | b17 |
The fast card cache is a very frequently accessed data structure.
It is basically a 2d array of per-region values (for every thread) that contain the recently card within that region that has been put into the remembered set.
This 2d array, nor its per-thread components are not aligned to cache lines or padded in any way to avoid false sharing.
Fix this.
It is basically a 2d array of per-region values (for every thread) that contain the recently card within that region that has been put into the remembered set.
This 2d array, nor its per-thread components are not aligned to cache lines or padded in any way to avoid false sharing.
Fix this.
- backported by
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JDK-8038248 Cache-align and pad the from card cache
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- Resolved
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- Resolved
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- Resolved
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- relates to
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- Resolved
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