| 1 | <?xml version='1.0' encoding='UTF-8'?>
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| 2 | <!DOCTYPE topic PUBLIC "-//OASIS//DTD DITA Topic//EN" "topic.dtd">
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| 3 | <topic xml:lang="en-us" id="ts_win-cpu-usage-rept">
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| 4 | <title>Inaccurate Windows CPU Usage Reporting</title>
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| 5 |
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| 6 | <body>
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| 7 | <p>
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| 8 | CPU usage reporting tools which come with Windows, such as Task
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| 9 | Manager or Resource Monitor, do not take the time spent
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| 10 | processing hardware interrupts into account. If the interrupt
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| 11 | load is heavy, with thousands of interrupts per second, CPU
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| 12 | usage may be significantly underreported.
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| 13 | </p>
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| 14 | <p>
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| 15 | This problem affects Windows as both host and guest OS.
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| 16 | Sysinternals tools, such as Process Explorer, do not suffer from
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| 17 | this problem.
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| 18 | </p>
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| 19 | </body>
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| 20 |
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| 21 | </topic>
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