ATM is a new tool designed to allow you to better explore the System File Cache use on your system. In addition to some monitoring functions, on newer OSs you may also modify your system cache behavior.

More importantly, on Vista, and the "Code named Longhorn" server, this tool allows you to investigate changes made to the system cache, especially with what Microsoft calls "SuperFetch" or "SuperCache".

What is the System File Cache?

The System File Cache is a component of the operating system kernel. It works in conjunction with the Memory Management sub-system and the IO sub-system to cache files, or more acuratly portions of file, in RAM. This important function significantly affects system performance by supporting sharing of commonly used files (such as system dlls) in memory, and avoids unnecessary disk IO.

What am I looking at?

ATM was designed for IT professionals, not your average user, so there is a lot stuff on the screen. But just start with the two graphs.

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