Preface
Why Is Performance Important?
If you have ever sat waiting for a computer to do something, (while pounding on your desk, cursing, and wondering, “What is taking so long?”), you know why it is important to have a fast and well-tuned computer system. Although not all performance problems can be easily solved, understanding why things are slow can mean the difference between fixing the problem in software, upgrading the slow hardware, or simply throwing the whole computer out the window. Fortunately, most operating systems, Linux in particular, provide the tools to figure out why the machine runs slowly. By using a few basic tools, you can determine where the system is slowing down and fix the parts that are running inefficiently.
Although ...
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