InspectIT make server slow

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Hello,

I use IBM WebSphere Application Server 8.5.5.5, InspectIT 1.8, SUSE SLES on s390x.

I have followed instructions :

https://inspectit-performance.atlassian.net/wiki/spaces/DOC18/pages/93009257/Installation+WebSphere

Linux:-Xbootclasspath/p:<PATH_TO_INSPECTIT>/inspectit-agent.jar -javaagent:<PATH_TO_INSPECTIT>/inspectit-agent.jar -Dinspectit.repository=[REPOSITORY_IP]:[REPOSITORY_PORT] -Dinspectit.agent.name=[AGENT_DISPLAY_NAME]

and process start of application is about 10-12 min while without InspectIT it started in 1 min only!

There is not any error or warning messages in logs of WAS. It seems all works in InspectIT GUI - I see Threads, Memory (but not CPU!)

Any advice?

Of cource instruction mentioned WAS 8.5.5.7 - may be that is the reason? But I cannot change version.