Find MySQL Session Using High CPU

* `top -Hc' to show top CPU usage threads
* Login MySQL and run
select * from performance_schema.threads where thread_od_id in (<ID or IDs of the threads from `top -Hc'>)\G

The above is equivalent to the following in Oracle run on Linux:
* `top' to show top CPU usage processes
* Login Oracle and run
select * from v$session where paddr in (select addr from v$process where spid in (<ID or IDs of the processes from `top'>);