We have moodle on Solaris machine V880 with the following configuration:
OS : Solaris 10, 2x900 Mhz, 4Gb RAM
We encountered a problem when the users trying to complete their online quizez concurrently for 150 users. The error was "Database Overloaded" and the CPU performance reached 100% and it became slow for other user to access the site. Is it something to do with database configuration or others? Pls help urgently.