UMA Agent - Openshift Container Agent metric clamp

Products

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

Issue/Introduction

 [WARN] [IntroscopeAgent.CleanupApmData] Clamp value of 50000 has been reached. No more logging will occur

java.lang.Throwable: Clamp limit reached

        at com.wily.util.feedback.AsynchFeedbackChannel$AsyncLoggingBehavior.log(AsynchFeedbackChannel.java:435)

        at com.wily.util.feedback.AsynchFeedbackChannel.doLog(AsynchFeedbackChannel.java:276)

        at com.wily.util.feedback.ABufferedApplicationFeedbackChannel.logbottleneck(ABufferedApplicationFeedbackChannel.java:85)

        at com.wily.util.feedback.ADefaultModuleFeedbackChannel.log(ADefaultModuleFeedbackChannel.java:485)

        at com.wily.util.feedback.ADefaultModuleFeedbackChannel.log(ADefaultModuleFeedbackChannel.java:479)

        at com.wily.util.feedback.ADefaultModuleFeedbackChannel.verbose(ADefaultModuleFeedbackChannel.java:437)

        at com.wily.util.feedback.DelegatingFeedbackChannel.verbose(DelegatingFeedbackChannel.java:201)

        at com.ca.apm.openshift.CleanupApmData.run(CleanupApmData.java:74)

        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)

        at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)

        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)

        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)

        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)

        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)

        at java.lang.Thread.run(Thread.java:748)

 [WARN] [IntroscopeAgent.InfrastructureAgent] Absolute metric clamp of 50000 reached, no more metrics can be created.  Instrumentation on this application should be reduced.

 [WARN] [IntroscopeAgent.InfrastructureAgent] Note: if no more metrics can be created when the agent starts up, there may be exceptions in the startup process. Increasing the clamp value may solve these exceptions.

Environment

Release : 11.1

Component : Openshift APM Agents

Cause

Agent default Metric clamp 

Resolution

Per engineering, increased the value to 250k (to match the EM Agent metric clamp size) .



caagent-openshiftmonitor.yml

name: apmenv_introscope_agent_metricClamp

value: 250000