Improved Windows Task Manager: Process Explorer

Using the Task Manager can show you some interesting things about what's running on your system, but sometimes you have a service going amuck. Task Manager will only show you that "services.exe" is using a lot of CPU and you won't be able to easily tell what's actually running wild.

Enter Process Explorer: (info on MS Technet | download)

So far, the graph window (see the second screenshot below) has been super helpful to me. I can set the scan interval to a couple seconds, let it run for a while, and come back. The graph not only stores the CPU usage, but also the process that was running! So, you can mouse-over the graph and get historical information about something chewing up CPU, memory, or I/O.

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