Original link: Eclipse OpenJ9 v0.46 Released For High Performance JVM / Phoronix.
Most people use OpenJDK with the traditional Hotspot JVM.
But Eclipse/IBM actually makes OpenJDK available with an alternative JVM: OpenJ9.
It is not generalley faster or generally slower than Hotspot. It is just different - faster for some tasks, slower for some tasks. But obviously it is something a Java developer should be aware of.
One feature not in Hotspot is that it can cache the output from JIT compilation between runs.
It is available for all th supported OpenJDK versions: 8, 11, 17, 21 and latest.
Source is available from Github and binaries are available from IBM.