Jason, It seems only the dev version of the sdk has JPS and I don't
root@log-001:/opt/elk-5.3.0-0/java/bin# ls
ControlPanel java javac javaws jcontrol jjs keytool orbd pack200 policytool rmid rmiregistry servertool tnameserv unpack200
root@log-001:/opt/elk-5.3.0-0/java/bin# jps
-bash: jps: command not found
root@log-001:/opt/elk-5.3.0-0/java/bin#
Yes Elasticsearch, Logstash and Kibana are running on the same server
Maybe this can help:
root@log-001:/opt/elk-5.3.0-0/java/bin# ./java -XX:+PrintFlagsFinal -version | grep HeapSize
uintx ErgoHeapSizeLimit = 0 {product}
uintx HeapSizePerGCThread = 87241520 {product}
uintx InitialHeapSize := 132120576 {product}
uintx LargePageHeapSizeThreshold = 134217728 {product}
uintx MaxHeapSize := 2090860544 {product}
java version "1.8.0_121"
Java(TM) SE Runtime Environment (build 1.8.0_121-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.121-b13, mixed mode)