25 Performance Analysis
Performance is one of the most visible characteristics of any system, and it’s often high on the list of complaints from users. Many users are convinced that their computers could run twice as fast if only the administrator knew how to properly tune the system to release its vast, untapped potential. In reality, this is almost never true.
One common fantasy involves tweaking the kernel variables that control the paging system and the buffer pools. Once upon a time, there were situations in which this was necessary and prudent. These days, it is usually a bad idea. The most likely result is that you will reduce your system’s ...
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