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Features Contributed by SAP
This page lists features of SapMachine that were crafted by SAP to enhance the enterprise-readiness of SapMachine. In general, we contribute these directly upstream to OpenJDK. We might downport these to an earlier version of SapMachine, though. If a feature is not accepted by the OpenJDK community, but considered essential, it might only appear in SapMachine. Below tables list the version it's available in OpenJDK and SapMachine in bold. If it's only in SapMachine, the version is given in normal letters.
The Metaspace of hotspot is a native memory region that contains information about loaded classes. It utilizes it's own custom memory management. This management could get into situations where no more allocations were possible although there was still enough space available. A basic redesign of this memory management by SAP avoids these situations and improves memory handling of Metaspace altogether. Major work is to be found in
| 8198423: Improve metaspace chunk allocation | 11 |
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