22.01.0.0

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22.01.0.0

Release date: January 31, 2022

This PSU release corresponds to the following OpenJDK versions:

Major Version	OpenJDK Version
7	7u332
8	8u322
11	11.0.14+9
13	13.0.10+5
15	15.0.6+5
17	17.0.2+8

What’s New

January 2022 PSU release security fixes.
Various performance improvements.

Resolved Issues

Issue ID Description

Issue ID	Description
ZVM-21048	When `-XX:+UseLargePages` is used and the number of static huge pages reserved by `nr_hugepages` is insufficient for the total heap, Prime failed to start. Now it matches OpenJDK behavior and continues as expected.
ZVM-22049	OldGC is not triggered often enough during idle time when NewGCs are occurring.
ZVM-22063	Map OpenJDK command line option `UseCountedLoopSafepoints` onto `KeepSafepointsInCountedLoops`.
ZVM-19635	Avoid lock in ByteArrayInputStream.read if it is used as an input of ObjectInputStream.
ZVM-20678	Improved performance of string collation and iteration.

ZVM-21048

When -XX:+UseLargePages is used and the number of static huge pages reserved by nr_hugepages is insufficient for the total heap, Prime failed to start. Now it matches OpenJDK behavior and continues as expected.

ZVM-22049

OldGC is not triggered often enough during idle time when NewGCs are occurring.

ZVM-22063

Map OpenJDK command line option UseCountedLoopSafepoints onto KeepSafepointsInCountedLoops.

ZVM-19635

Avoid lock in ByteArrayInputStream.read if it is used as an input of ObjectInputStream.

ZVM-20678

Improved performance of string collation and iteration.

Known Issues

There are no new issues to report in this release.