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Windows tip of the week

Use Resource Monitor to find an overactive process


By Ed Bott


One of the most powerful troubleshooting tools in Windows is Resource Monitor, a multi-tabbed utility program that lets you find out in real time which processes are using up CPU, memory, disk, and network resources.


In Windows 10, the best way to get to Resource Monitor is from Task Manager, where you'll find an Open Resource Monitor shortcut at the bottom of the Performance tab. Alternatively, you can use the command line: perfmon.exe /res


Each of the five Resource Monitor tabs offers a different view of performance. The top of each tab shows processes that are currently active, while the bottom of the tab shows details about that activity. Click the checkbox to the left of one or more processes in the top pane to filter the results in the bottom pane to just those associated with your selection.


So if you're puzzled why your hard disk is working overtime, go to the Disk tab and select the processes that show the most activity. Then, in the bottom pane, you can see exactly which files that process is reading and writing. (You might need to resize columns to see the full path.)

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