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Posted to issues@karaf.apache.org by "Richard Sands (Jira)" <ji...@apache.org> on 2019/10/26 01:41:00 UTC
[jira] [Updated] (KARAF-6480) Permgen JVM options still being used
on Windows
[ https://issues.apache.org/jira/browse/KARAF-6480?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Richard Sands updated KARAF-6480:
---------------------------------
Description:
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 (for me) be 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]
was:
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]
> 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
> Priority: Minor
>
> 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 (for me) be 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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