JDK-6968345 : Pad popular instantiations of TaskQueue
- Type: Enhancement
- Component: hotspot
- Sub-Component: gc
- Affected Version: hs19
- Priority: P4
- Status: Resolved
- Resolution: Fixed
- OS: generic
- CPU: generic
- Submitted: 2010-07-12
- Updated: 2015-11-05
- Resolved: 2015-11-05
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| JDK 9 |
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9Fixed  |
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Description
The ParNew and CMS collectors pad TaskQueues on allocation to prevent inadvertent sharing of cache lines. This should be applied generally to popular TaskQueue instantiations such as TaskQueue<oop>, TaskQueue<StarTask>, etc., that are important to performance.
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