#!/usr/bin/env bash # # local environment params user by ./prank.sh in project root dir # # copy to project root dir and edit # # -Xmx31G max heap 31G (not 32G, to keep compressed oops enabled) # -XX:+UseParallelGC throughput-oriented GC (better than G1 for batch workloads) # -XX:+UseCompactObjectHeaders 64-bit object headers instead of 128-bit (JEP 450, JDK 24+) # note: incompatible with -Xmx31G (compressed oops limit shifts to ~29G) # -XX:+AlwaysPreTouch pre-fault heap pages at startup to avoid page faults later # -XX:+EagerJVMCI initialize Graal JIT at startup for faster warmup (only with GraalVM) export JAVA_LOCALENV_PARAMS="-Xmx31G -XX:+UseParallelGC" export PRANK_LOCALENV_PARAMS="-threads 8"