Number of Active Workers shown in Enterprise Manager ApplicaitonTriageMap


Article ID: 193388


Updated On:


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


We are reviewing 20 minute graph of the Enterprise Manager ApplicationTriageMap active workers metric.

Metric Path: Enterprise Manager|ApplicationTriageMap:Number of Active Workers

In this 20 minute period we see the active workers reaching the maximum value of 20 three times.Sometimes we see the max being reached even more often. 

1. What does it mean when the active workers reach the max (e.g., what is the impact on the system)? 

2. Can the maximum be raised? 

3. Should we be concerned that that the Max is reached so often on our system?


In this environment, we found very high number of transaction traces, APM Team Center data and APM Team Center alert which seems to be the cause of this issue.


CA Application Performance Management 10.7


This metric indicates how many threads are currently used from common thread pool of APM Team Center. It can point to overloading issues.

We suggest to set the following values in DAYS
introscope.apm.alert.preserving.time=5 DAYS DAYS

Set transaction traces DB value to 3 days.

We should further lower the transaction traces sampling value.

Enable the following in