This knowledge article may contain information that does not apply to version 21.05 or later which runs in a container environment. Please refer to Article Number 000385088 for more information about troubleshooting BMC products in containers.

Please refer to KA 000111538 for Best Practice Java Settings.


Check the following:

1. Increase maximum heap size
Set vm.maximum.heap.size.
This needs to be set in arserver.config (Windows only) located in the ‘ARSystem’ directory.
For Linux or Solaris, the file name is arserverd.conf.

          - Medium size environments with 800-2,000 concurrent users and 16 GB RAM,
                                  set jvm.minimum.heap.size to at least 8589934592.
                                  set jvm.maximum.heap.size to at least 8589934592.
          - For a Large environment (2000-5000 concurrent users and 32 GB RAM)
                                  set jvm.minimum.heap.size to at least 21474836480.
                                  set jvm.maximum.heap.size to at least 21474836480.


2. Add additional garbage collection parameters to arserverd.conf.
Note option 15 to 18 as example:
......................................
# JVM options (number indicates option order)
jvm.option.1=-javaagent:../lib/spring-instrument-4.1.2.RELEASE.jar
jvm.option.2=-Djavax.xml.transform.TransformerFactory=org.apache.xalan.processor.TransformerFactoryImpl
jvm.option.3=-Dlogback.configurationFile=file:../conf/logback_server.xml
jvm.option.4=-Xss2M
jvm.option.5=-XX:MetaspaceSize=384M
jvm.option.6=-XX:MaxMetaspaceSize=512M
jvm.option.7=-Dcom.sun.management.jmxremote
jvm.option.8=-Dcom.bmc.arsys.boot.flavor=server
jvm.option.9=-XX:OnOutOfMemoryError=./kill-server
jvm.option.10=-Djetty.home=../jetty
jvm.option.11=-Dorg.eclipse.equinox.http.jetty.autostart=false
jvm.option.12=-XX:ErrorFile=file:../db/arserverjvmcrash_PID%p.log
jvm.option.13=-XX:+HeapDumpOnOutOfMemoryError
jvm.option.14=-XX:HeapDumpPath=../Logs
jvm.option.15=-XX:+UseConcMarkSweepGC
jvm.option.16=-XX:+UseParNewGC
jvm.option.17=-XX:+UseCompressedOops
jvm.option.18=-XX:NewRatio=2
jvm.option.19=-XX:+DisableExplicitGC

 

Java Settings: 
                     
Option 1. Java 1.8  (Using CMS GC) 
Use the following on all 3 environment sizes:
-XX:MaxMetaspaceSize=512m
-XX:+UseCompressedOops
-XX:+UseConcMarkSweepGC
-XX:+UseParNewGC
-XX:NewRatio=2

Option 2. Java 11 or higher (Using G1GC)
Use the following on all 3 environment sizes:
-XX:+DisableExplicitGC
-XX:MaxMetaspaceSize=512m
-XX:MetaspaceSize=384m
-XX:+UseCompressedOops
-XX:+UseG1GC
-XX:+UseStringDeduplication
-XX:G1NewSizePercent=40
-XX:+UnlockExperimentalVMOptions
-XX:MaxGCPauseMillis=200

Note:  If using Tomcat 7, do not use the -XX:G1NewSizePercent option