For Performance/slowness issues instead of taking Threaddump manually or instead of invoking PerformanceTool make use of the below URL when the issue occurs,
Note: The above URL works even when the server is not responding.
Invoking the above URL collects the below outputs,
ThreadDump
RunningQueries
LockedQueries
ConnectionDump
at the time of the issue occurrence and automatically place it in the logs folder in the SupportCenter directory
Once the above files are generated the below message will be shown in the browser,
--- Successfully generated debug log files. Please zip the entire 'logs' folder present in ManageEngine/SupportCenter/ and upload it using the below link.