JDK-8232759 : Remove GC.class_stats
- Type: Enhancement
- Component: core-svc
- Sub-Component: tools
- Priority: P4
- Status: Resolved
- Resolution: Fixed
- Submitted: 2019-10-22
- Updated: 2020-01-24
- Resolved: 2020-01-09
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| JDK 15 |
|---|
15 b06Fixed  |
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Description
I wrote GC.class_stats as a way to understand the composition of the class metadata. The hope was that we can use this information to reduce the metadata size, or rearrange them to increase the read-only ratio of metadata in CDS archives. However, in reality probably no one (including me) has used this information for a long time. The code is being bit-rotted (see JDK-8232758) and becomes a hassle when adding new MetaspaceObj classes/fields. We should consider simplifying the implementation (by using <T>::metaspace_pointers_do), or simply removing it.
Comments
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