OpenJ9

[koppor]

Update: Discussion continues at #722

---

• Follow-up to Update to JDK25 jabref#14057 and Switch to Eclipse OpenJ9 (to gain performance) #481
• Blocked by jlink: classlist not found eclipse-openj9/openj9#23240
• Blocked by VM options in resource java.base/jdk/internal/vm/options should be prepended on startup eclipse-openj9/openj9#23031

Background and Motivation

Eclipse OpenJ9 is a JVM developed by IBM since the 90s. It has superior performance compared to Oracle's JVM: https://www.eclipse.org/openj9/performance/

We should give it a try in JabRef, too.

Steps to test

Run JabRef and see if its working

Mandatory checks

• I own the copyright of the code submitted and I license it under the MIT license
• [.] I manually tested my changes in running JabRef (always required)
• [.] I added JUnit tests for changes (if applicable)
• [.] I added screenshots in the PR description (if change is visible to the user)
• [.] I described the change in CHANGELOG.md in a way that is understandable for the average user (if change is visible to the user)
• [.] I checked the user documentation: Is the information available and up to date? If not, I created an issue at https://github.com/JabRef/user-documentation/issues or, even better, I submitted a pull request updating file(s) in https://github.com/JabRef/user-documentation/tree/main/en.

[koppor]

Error: Cannot generate CDS archives: classlist not found: /home/runner/work/jabref-koppor/jabref-koppor/jabgui/build/packages/ubuntu-22.04-arm/JabRef/lib/runtime/lib/classlist