I have a c4.large EC2 instance which is running Windows Server 2012 and MySQL.
When I look at the CPU usage on the machine it seems that MySQL is capping out at 50% CPU usage when the system is under load, it also looks like this is relative to some kind of throttling but I am not sure why this is happening.
The c4.large instance comes with 2 vCPUs and dedicated ECU and I can see from the screenshot below that these are both being used but maybe the combined total of this is being capped?
I am not sure if this is a MySQL issue or relative to Amazon Web Services like a potential systems issue or if it's some kind of misconfiguration on my side.
Does anyone have any idea why this is happening?