TechEmpower.FrameworkBenchmarks/frameworks/Ruby/rack-sequel/config/java_tune.sh

#!/bin/sh
stack_size=1
cache_size=240
meta_size=192
avail_mem=$(awk '/^MemAvailable/ { print int(0.6 * $2 / 1024); exit }' /proc/meminfo)
heap_size=$(( avail_mem - meta_size - cache_size - (stack_size * MAX_CONCURRENCY * THREAD_FACTOR) ))

JRUBY_OPTS="-J-server -J-XX:+AggressiveOpts -J-Djava.net.preferIPv4Stack=true"
#JRUBY_OPTS="$JRUBY_OPTS -J-XX:+UseSerialGC"
JRUBY_OPTS="$JRUBY_OPTS -J-XX:+CMSClassUnloadingEnabled -J-XX:+UseConcMarkSweepGC"
#JRUBY_OPTS="$JRUBY_OPTS -J-XX:+UseG1GC -J-XX:+UseStringDeduplication"
JRUBY_OPTS="$JRUBY_OPTS -J-Xms${heap_size}m -J-Xmx${heap_size}m"
JRUBY_OPTS="$JRUBY_OPTS -J-Xss${stack_size}m"
JRUBY_OPTS="$JRUBY_OPTS -J-XX:MaxMetaspaceSize=${meta_size}m"
JRUBY_OPTS="$JRUBY_OPTS -J-XX:ReservedCodeCacheSize=${cache_size}m"
JRUBY_OPTS="$JRUBY_OPTS -Xcompile.invokedynamic=true -J-XX:+UseNUMA -J-XX:+AlwaysPreTouch"

export JRUBY_OPTS