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20.06.0.0

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20.06.0.0

Release Notes PDF

Release date:

This release corresponds to the following OpenJDK versions:

Major Version OpenJDK Version

7

7u262

8

8u252

11

11.0.7+10

What’s New

  • The release of Zing 20.06.0.0 includes ReadyNow improvements for faster warmup and smaller footprint.

  • Zing 20.06.0.0 introduces a JNI exception checking optimization. See Using Zing Command-Line Options for the UseFastJNIExceptionCheck option and details.

  • Zing 20.06.0.0 provides full elasticity support for code cache. See Using Zing Command-Line Options for the InitialCodeCacheSize, ReservedCodeCacheSize, and CodeCacheOopTableSize options and details.

  • Zing 20.06.0.0 includes a further improvement of JDK 11 java.lang.StackWalker which is frequently used by log4j2 and other logging implementations. See also https://openjdk.java.net/jeps/259 and java.lang.StackStreamFactory$AbstractStackWalker.

  • Zing 20.06.0.0 introduces new diagnostic Java Flight Recorder (JFR) events to simplify error handling.

  • The lock-less Java Native Interface (JNI) protocol is disabled by default. See Using Zing Command-Line Options for the UseThreadStateNativeWrapperProtocol option and details.

Resolved Issues

Issue ID Description

ZVM-15687

Make -XX:+TraceImplicitNullChecks manageable.

ZVM-12535

JVM flags, ParGCCardsPerStrideChunk and UseCompressedClassPointers, give error.

Known Issues

Issue ID Description