Optimizing PC memory isn't as easy as "just add more," and in fact there are plenty of times when adding more RAM is downright pointless. This column will cover some monitoring tools and techniques that will help you figure out what's really going on with your machine and when you do need to add more RAM.
We've all heard the mantra a thousand times: adding RAM is the easiest and most reliable way to boost the performance of a sagging system. And while that's usually true, there's a lot that goes unsaid in that homily.
For one thing, it isn't always easy to tell when you are truly running low on memory. Although Windows provides lots of information about memory utilization in various places, it still manages to obfuscate most of what you really need to know. This occurs because Windows either overloads the administrator with irrelevant information, or it hides the information that you really need in an out-of-way location.
UNIX isn't much better. The free utility that comes with UNIX-based systems usually only provides summary data, and you have to dig around in unusual places to find actionable utilization figures. As a result, administrators have a hard time conducting the kind of ongoing clinical observation that leads to true understanding of memory utilization. So most of us just salute the platitude and dump in more memory, whether it's actually needed or not.
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