The Eclipse OpenJ9 v0.40 release supports OpenJDK 8, 11, 17, and 20 releases. In further tuning OpenJ9 for use with small form factor devices with limited amounts of RAM, a new "-XX:codecachetotalMaxRAMPercentage" option is added to deal with issues where the virtual machine uses too much memory for just-in-time (JIT) code caches. The -XX:codecachetotalMaxRAMPercentage option allows setting an upper limit for the code cache size as a percentage of the physical memory the VM process is permitted to use.
The OpenJ9 v0.40 release also now emits a warning when container detection fails, adds support for persistent shared classes cache under z/OS platforms, and the EC key generation algorithm can now use the native OpenSSL library.
Downloads and more details on the OpenJ9 v0.40 JVM release via GitHub .