By default, the Cache Manager generates two types of warning and informational messages:

You can use the fs messages command to control whether the Cache Manager displays either type of message, both types, or neither. It is best not to disable messages completely, because they provide useful information.

If you want to monitor Cache Manager status and performance more actively, you can use the afsmonitor program to collect an extensive set of statistics (it also gathers File Server statistics). If you experience performance problems, you can use fstrace suite of commands to gather a low-level trace of Cache Manager operations, which the AFS Support and Development groups can analyze to help solve your problem. To learn about both utilities, see Monitoring and Auditing AFS Performance.