JDK-7146246 : G1: expose some of the -XX flags that drive which old regions to collect during mixed GCs
- Type: Enhancement
- Component: hotspot
- Sub-Component: gc
- Affected Version: hs23
- Priority: P3
- Status: Closed
- Resolution: Fixed
- OS: generic
- CPU: generic
- Submitted: 2012-02-16
- Updated: 2013-09-18
- Resolved: 2012-03-31
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| JDK 7 | JDK 8 | Other |
|---|---|---|
7u21Fixed  |
8Fixed |
hs24Fixed |
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Description
The heuristics that drive which old regions to collect during mixed GCs and which not, introduced by: 7132029: G1: mixed GC phase lasts for longer than it should and maybe further fine-tuned by: 7146242: G1: alternative heuristic on deciding which old regions not to collect introduced several develop -XX flags. It will be good to expose some of them to the users so that they can adjust the "space efficiency" vs. "pause times duration" trade-off to what they feel it's appropriate for them. We should decide what the minimum number of flags is and make sure their names are reasonable.
Comments
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