Amirhossein, What JDK did you end up using for the Raspberry Pi build? I’ve found that JDK 8 from Oracle is notably higher performance, as they have dedicated support for the ARM instruction set, versus OpenJDK that falls back to an interpreter only VM.
If it’s on OpenJDK, let me know if you’d like to run with checking out JDK 8 or if you’d like for me to do it. Thanks, -scott
