My amazon mysql large RDS instance's CPU utilization is going very high (about 70%) without any genuine reason. How to find which query or process is harming my instance?
thanks
The standard method is to examine SHOW PROCESSLIST or SHOW ENGINE InnoDB STATUS to see what's going on.
You are using InnoDB, right?
It could also be due to the autoback feature RDS provides. I think AWS RDS does an automatic back up around midnight everyday, you must factor this into your calculations
来源：https://stackoverflow.com/questions/19053980/rds-instance-cpu-utilization