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25.02.301.0

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25.02.301.0

Release Notes PDF

Release date: August 8, 2025

This release is based on the Azul Zing Build of OpenJDK (Zing) 25.02.300.0 and corresponds to the following OpenJDK versions:

Major Version OpenJDK Version

8

1.8.0_461-b1

11

11.0.27.0.101+1-LTS

17

17.0.15.0.101+1-LTS

21

21.0.7.0.101+1-LTS

What’s New

  • Zing 25.02.301.0 changes the default values for the following command line option:

    • -XX:AvoidInterruptsDuringHeapFunding has changed from false to true by default. This change also helps avoid intermittent failures during funding with libonload. For more information about this option, see Command Line Options, Zing Command-Line Options.

Known Issues

Issue ID Description

ZVM-34474

Open JDK build number for JDK 8 is displayed incorrectly in java -version output.

Resolved Issues

Issue ID Description

ZVM-35206

In some cases, the C1 compiler queue can become unusually deep with high overhead of compile requests, significantly impacting performance.

ZVM-35554

Intermittent crash during memory allocation for code cache when nearing its limits.

ZVM-35237

Processes not starting on KVM processors.

ZVM-35296 + ZVM-35247

Undefined behavior could cause memory corruption with alternative allocators.

ZVM-34955

Some local reference variables running in a virtual thread can become corrupted.

ZVM-35714

Crashes or bad performance caused by wrong granularity of java heap commit on systems where the huge page size is not 2 MB.