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I have been using the Windows 7 Resource Monitor lately which has proven very powerful.

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One can see what disk latency any process produces and effectively disable it if not required. For example, I had noticed that certain indexing or checking utilities will produce a disk latency of at least 200ms. By disabling unneeded services it reduced to about 50ms max for most cases. This is a spectacular change.

Does anyone know of similar monitoring tools for effectively reducing latencies and resources use?

Currently, I'd be interesting in anything that goes more low level.

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Have a look at the Windows Sysinternals suite, in particular Process Explorer, which is like task manager on steroids. Overall its a very useful set of utilities for diagnostics/troubleshooting and administration.

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