Our Moodle server is experiencing high CPU loads when students are logging in and taking quizzes. During the events, we have about 200 students logged into the server. There were about 200-300 entries to the logs per second. Moodle is running on Fedora on top of a VMWare environment. We have Moodle 3.2.2 on-premise.
On average during the quizzes we have page loads of on average 30 or more seconds. Once the 200 students are reduced to normal levels, everything is good. When 100 students are taking quizzes we get about 2 second page loads.
Can you give us some troubleshooting steps and/or configuration changes that would help?
This link contains information like server type, performance logs, and Moodle logs during the overload.