APM Agent overhead

Document ID : KB000072820

Last Modified Date : 10/07/2018

Show Technical Document Details

Issue:

Seeing a steep increase in the application's response times after the instrumentation of APM.

Environment:

CA APM 10.3
CA APM 10.5

Cause:

Agent Overhead .
Also, there is a known issue if you are using IBM JVM

Resolution:

1. You could start from: this article: KB000020331

https://comm.support.ca.com/kb/_About-Introscope-Agent-Overhead/KB000020331

2. There is a known issue if you are using IBM JVM

https://comm.support.ca.com/kb/_When-running-an-IBM-JVM-the-APM-documentation-recommends-using-AgentNoRedefNoRetransjar-instead-of-Agentjar-for-WebSphere-Application-Server-Is-that-also-true-for-any-other-type-of-Application-Server-running-an-IBM-JVM-eg-WebLogic/KB000015759

3. Agent Metric Limit

https://comm.support.ca.com/kb/_Agent-metrics-do-not-get-reported-in-the-Investigator-tree-when-exceeding-the-agent-metric-limit/KB000004045

4. How to troubleshoot Metrics Explosion

https://comm.support.ca.com/kb/_Troubleshooting-a-Metrics-explosion/KB000009668

Additional Information:

Also, we tried some workarounds as suggested by CA,
1. Disable the automatic cross process deep tracing
2. Disable the deep instrumentation entirely.