-Xms512m
-Xmx512m
-XX:+UseG1GC
-XX:+HeapDumpOnOutOfMemoryError
-XX:HeapDumpPath=/usr/share/logstash/logs/heap_dump.hprof
-XX:MaxMetaspaceSize=256m
-XX:+DisableExplicitGC
-XX:+AlwaysPreTouch