Richard Sands created KARAF-6480:
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Summary: Permgen JVM options still being used on Windows
Key: KARAF-6480
URL: https://issues.apache.org/jira/browse/KARAF-6480
Project: Karaf
Issue Type: Bug
Affects Versions: 4.2.8
Reporter: Richard Sands
The -XX:PermSize and -XX:MaxPermSize options are still being set in karaf.bat,
but they are deprecated in Java 8+ and ignored in Java 11+.
The equivalent parameters were handled for Linux in KARAF-3945.
These JVM parameters are deprecated starting in Java 8 but are "still accepted
and acted upon" through Java 10:
[https://docs.oracle.com/javase/8/docs/technotes/tools/windows/java.html]
[https://docs.oracle.com/javase/10/tools/java.htm]
Starting in Java 11, these options are "accepted but ignored":
[https://docs.oracle.com/en/java/javase/11/tools/java.html]
And they are still accepted through the latest: Java 13.
These options would ideally be removed or replaced with the equivalent
Metaspace parameters -XX:MetaspaceSize and -XX:MaxMetaspaceSize. More info:
[https://blogs.oracle.com/poonam/about-g1-garbage-collector,-permanent-generation-and-metaspace]
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