From the docs (link is redirected to the admin guide home page for some reason right now but shouldn't hard to find in the table of contents):
https://doc.laserfiche.com/laserfiche.documentation/11/administration/en-us/Default.htm#../Subsystems/WAConfiguration/Content/Diagnostics.htm
Diagnostics
The Diagnostics page allows you to select a log level for the web client, as well as to turn tracing on and off in order to locate a specific problem.
The following log levels are available:
- Critical: Only very important errors will be logged. This is the default setting.
- Important: All errors will be logged.
- Informational: Both errors and non-error informational messages will be logged.
- Debug: All errors and non-error informational messages, plus additional information about activity in the web client, will be logged. This setting is only recommended when troubleshooting a specific issue, as it can result in very large log files and performance impacts.
You can also choose to enable tracing for the web client, Repository Access, and WinHTTP. In general, tracing should only be performed to troubleshoot specific issues, usually at the request of your support contact.
It's quite likely the Log Level was set to "Debug". The others should still follow the ETW log config behavior, which by default caps log size at 1 or 10 MB with rollover.