[google-cloud-sql-discuss] Very high CPU Usage for few hrs every day

Hi

Our instance configuration is this

6 core with 18 GB RAM

We dont get much traffic to our site, but for last 1 week we have been noticing that the mysql server CPU usage is every high, something like 500%. After 2-3 hrs it goes back to normal. This usually happens between around 11 AM  to 2 PM. I tried process list but there is nothing abnormal. Not sure where to look for as i am mostly a dev and dont have much db experience 

Any pointers ??? 

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