We are suspecting that one of our PI Servers are not delivering the performance it used to, especially to processbook clients. The question is how we best can identify any problems here. It is more of a "gut feeling" from the users for now, so I need to map out any possible problems. There are no errors in the message log. We have the pi performance monitor interface installed, but it is not used for much at the moment. Which parameters should be logged that can tell us anything useful here?
Are there any tuning parameters that should be looked into for increasing the read performance of the system? Any potential settings that could degrade performance?