If THP (Transparent Huge Pages) are enabled unconditionally on the system, java applications that use many threads may see a huge Resident Set Size. That footprint is caused by thread stacks being mostly paged in.

The issue was reported in JDK bug database and already fixed:

THPs cause huge RSS due to thread start timing issue
https://bugs.openjdk.org/browse/JDK-8312182

We checked source code in src rpm, it looks OpenJDK 11(latest) and OpenJDK 17 does not contain the above fix.
Please a backport the fix.

Version-Release number of selected component (if applicable):

java-11-openjdk-11.0.20.0.8-3.el8
java-17-openjdk-17.0.8.0.7-2.el8