Initial performance diagnosis

There are many types of reported performance problems to consider when diagnosing performance problems.

Types of reported performance problems
When a performance problem is reported, it is helpful to determine the kind of performance problem by narrowing the list of possibilities.
Performance-Limiting Resource identification
The best tool for an overall look at resource utilization while running a multiuser workload is the vmstat command.
Workload management diagnosis
Workload management simply means assessing the priority of each of the components of the workload.

Parent topic: Performance management