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ISIM Application Slow Performance after APM instrumentation


Article ID: 131230


Updated On:


CA Application Performance Management Agent (APM / Wily / Introscope) INTROSCOPE


Trying to instrument IBM Security Identity Manager(ISIM). This application is deployed on WebSphere Application server. 
 It looks as the ISIM application has slowed down drastically after the APM instrumentation. 


IBM J9 JDK 1.6 causes class redefinition and retransformation lead to performance issues. 


Introscope Agent Release,
Operating System: RHEL 6
WebSphere Server
IBM Security Identity Manager(ISIM)


Per Engineering, with an IBM J9 JVM, consider  replacing the primary Agent.jar and IntroscopeAgent.profile files with modified versions, AgentNoRedefNoRetrans.jar and IntroscopeAgentNoRedef.profile, to avoid performance issues. Consider the following guidelines:
  • IBM J9 JVM with JRE 1.6.0: It is required to use the AgentNoRedefNoRetrans.jar file instead of Agent.jar.

Additional Information