The Microsoft Windows NT operating system, by design, includes voluminous performance measurement data, but very few tuning knobs. This article evaluates the extent to which these claims can be substantiated by looking at the design and performance of the NT Cache Manager and the dynamic tuning that occurs at initialization that is based on memory capacity and the differences between the Server and Workstation versions of the OS. The fact that there are almost no tuning knobs in the operating systems also has implications for the design of high performance applications and the administration of complex NT-based systems.
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