High CPU usage on ITM

[juliocmog]

Hello!

We are using this plugin (https://grafana.com/grafana/plugins/ibm-apm-datasource/) on Grafana v8.5.21 connected with ITM TEPS v6.3.7 SP13. We are able to fetch real time and historical data, but on every query we see CPU usage on TEPS and TEMS get higher and doesnt come down after metric is fetch, we see also the CPU usage increase for the agent process/service on the client/agent server and doesnt come down after metric is fetch or after we switch in Grafana to another server/client. It appers that the query keeps running forever.
To workaround the issue we have to kill Java TEPS process /opt/IBM/ITM/lx8266/iw/java/bin/java then restart TEPS.
The "Deallocate dataset after every metric query" is enabled.
Any idea?
Thank you!

[juliocmog]

When I open Grafana dashboard and load metrics for a server, I noticed SQL query in loop in TEPS logs, it is repeating same SQL query apparently forever..

[ckam11]

Hi!

We have Grafana 8.5.5 connected to ITM 6.3.0.7 Service Pack 10 and the CPU accumulates when we fetch metrics from IIS agent. Many ActiveMQ exceptions are present in TEPS system* logs.

Also, we have the same workaround.

Regards.

[ckam11]

Hi,

The error message is as follows:
'Unable to find the InitialContextFactory org.apache.activemq.jndi.ActiveMQInitialContextFactory.'.: nested exception is:
javax.naming.NoInitialContextException: Unable to find the InitialContextFactory

Any idea?

Thank