Sas Services and CPU utilization

[Rudra01]

Why does cpu utility go high when we restart sas services?

[LinusH]

With this little information it's only a guessing game.

What SAS services do you restart?

Which processes have high CPU utilization? 

For how long is the CPU utilization elevated?

Have you check the logs for relevant services in your deployment?

Involve your infrastrucure team, they might be able to some signaling etc that is not visible to you.

[Rudra01]

If we have to take restart of whole sas service as per starting order mention in documentation and we are Taking restart because cache locator was stopped due to disk store exception error
Then why cpu utility is high special zulu platform x64 is high utility

[gwootton]

Generally speaking, the startup of an application or service is CPU-intensive as it has tasks to complete. After it's started up and it's mostly waiting for input or requests, CPU usage goes down.

[Kurt_Bremser]

The Java runtimes used by Tomcat (the web application server) eat a lot of CPU while the web apps are loaded (which can take half an hour, depending on how many apps you have and CPU performance).

[picardda]

In our case, when we restart the services, not only we respect an order but we monitor the CPU and wait till it goes back to an acceptable level before starting the next service. It takes about 25 min to complete.