For each Web application, service, or engine, you can set a minimum severity level an event must have in order to be logged. This way, you can control the rate at which the log file will grow.
The severity levels are, from least severe to most severe:
- Debug
- Info
- Warning
- Severe
- Fatal
You set the least severe message that should be logged, so that any messages less severe than your choice will not be logged. For example, if you set the severity level to Warning, then the server will log Warning, Severe, and Fatal event messages, but not Debug and Info messages.