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