JDK-8036860 : Pad and cache-align the BiasedMappedArray
- Type: Enhancement
- Component: hotspot
- Sub-Component: gc
- Affected Version: 8u20,9
- Priority: P4
- Status: Resolved
- Resolution: Fixed
- Submitted: 2014-03-07
- Updated: 2014-08-28
- Resolved: 2014-03-17
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| JDK 8 | JDK 9 |
|---|---|
8u20Fixed  |
9 b08Fixed |
Description
To avoid any future issues regarding false sharing (basically variability) with data structures based on BiasedMappedArray, pad and cache align it. BiasedMappedArray is generally used within hot loops, so this seems prudent to do.