JDK-8155886 : Release Note: Various GC combinations have now been removed
- Type: Sub-task
- Component: hotspot
- Sub-Component: gc
- Affected Version: 9
- Priority: P4
- Status: Closed
- Resolution: Delivered
- Submitted: 2016-05-03
- Updated: 2017-09-22
- Resolved: 2016-12-13
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| JDK 9 |
|---|
9Resolved  |
Description
The GC combinations that were deprecated in JDK 8 have now been removed. This means that the following GC combinations no longer exist: * DefNew + CMS * ParNew + SerialOld * Incremental CMS The "foreground" mode for CMS has also been removed. The command line flags that were removed are: `-Xincgc, -XX:+CMSIncrementalMode, -XX:+UseCMSCompactAtFullCollection, -XX:+CMSFullGCsBeforeCompaction` and `-XX:+UseCMSCollectionPassing`. The command line flag `-XX:+UseParNewGC` no longer has any effect. ParNew can only be used with CMS and CMS requires ParNew. Thus, the `-XX:+UseParNewGC` flag has been deprecated and will likely be removed in a future release.