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The need to improve and control system usage may not be evident unless you monitor your system regularly. Without regular monitoring it may not be obvious that a system is degraded. For example, just as a driver might not notice the difference between 48 and 50 miles per hour without the aid of a speedometer, you might not notice a 4 percent degradation without performance monitoring. There are many ways to monitor system performance.
The real-time performance monitor (rtpm) can be used to monitor and analyze ongoing performance characteristics. This tool is useful for monitoring the performance of small to moderate sized systems.