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21.05.0.0

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21.05.0.0

Release Notes PDF

Release date: May 31, 2021

This release corresponds to the following OpenJDK versions:

Major Version OpenJDK Version

7

7u302

8

8u292

11

11.0.11+9

13

13.0.7+5

15

15.0.3+3

What’s New

  • Non-ZST Heap Elasticity introduced. See Recommended Heap Size for details. When heap elasticity is enabled, the Garbage Collector tries to minimize the memory footprint, keeping it between the user- defined range of -Xms and -Xmx. At the same time, the CPU usage of the Garbage Collector is monitored and the memory minimizing goal relaxed in case the CPU usage increases too much. Heap Elasticity is not available when Azul Zing System Tools (ZST) is installed.

  • Azul Prime 21.05.0.0 makes the OpenJDK C1 OSR the default OSR for the Falcon compiler. The C1 OSR takes much less time and CPU resources to fully optimize your code to steady-state performance.

  • Stream Builds (previously known as Feature Releases) are now free for use in development and evaluation. As such, the builds no longer check for an evaluation license.

  • Latency improvement for applications with frequent Unsafe.get() and put() calls.

  • Fixed heap dump compatibility issue that prevented opening Zing head dumps in IntelliJIdea.

  • Enabled jcmd ManagementAgent command option support.

Resolved Issues

There are no resolved issues associated with this release.

Known Issues

There are no new issues to report in this release.