Analyzing Performance
Performance analysis is the process of identifying performance bottlenecks in your system. It involves a number of steps. The first step is to look at the big picture: Is the problem CPU- or I/O-related? If it is a CPU problem, what is the load average? You should probably check what processes are running and what is causing the problem. If it is an I/O problem, is it paging or normal disk I/O? If it is paging, increasing memory might help. You can also try to isolate the program or the user causing the problem. If it is a disk problem, is the disk activity balanced? If you have only one disk, you might want to install a second.
The next section looks at several tools that you can use to determine the answers to the preceding ...
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