JDK-8079556 : BACKOUT - Determining the desired PLAB size adjusts to the the number of threads at the wrong place
- Type: Sub-task
- Component: hotspot
- Sub-Component: gc
- Affected Version: 9
- Priority: P1
- Status: Resolved
- Resolution: Fixed
- Submitted: 2015-05-07
- Updated: 2015-06-03
- Resolved: 2015-05-07
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| JDK 9 |
|---|
9 b66Fixed  |
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Description
After the change the size returned by PLABStats::desired_plab_sz() could get below the minimum PLAB size due to truncating integer division in that function, and actually missing alignment. This results in several places getting the wrong results because of this broken invariant. The fix will take more than a day and this change is now blocking a push of hs-gc to main.