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Windows Reliability and Performance Monitor
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| bet | 5/7 | | Sana | 24.03.2020 | | Hajmi | 0.56 Mb. | | #8701 |
The Windows Reliability and Performance Monitor can display both processor performance state and processor idle state usage.
The Windows Reliability and Performance Monitor includes performance counters that can provide a somewhat more detailed view of the processor speed changes that occur in response to changes in power policy or changes in processor utilization. By using these performance counters, you can see the current processor speed for each processor or core in the system. Figure 3 shows how to add these performance counters in the Windows Reliability and Performance Monitor.
Figure 3. Adding processor performance counters in the Reliability and Performance Monitor
Figure 4 shows an example of Windows Reliability and Performance Monitor displaying processor performance state usage.
Figure 4. Windows Reliability and Performance Monitor displaying processor performance state usage
The Windows Reliability and Performance Monitor can also be used to view and log processor idle state (APCI C‑state) usage. It can be useful to use the histogram view in the Windows Reliability and Performance Monitor to compare the system idleness to the three possible C‑states on a system. Figure 5 shows an example of Windows Reliability and Performance Monitor displaying such a histogram.
Figure 5. Windows Reliability and Performance Monitor displaying processor idle state (C‑State) usage
Although Windows 7 and Windows Server 2008 R2 use only three discrete C-states, the underlying system can use lower power processor idle states than C3 for the third C-state. System manufacturers that would like to view how much time a system spends in these lower power idle states are encouraged to contact their processor vendor for vendor-specific tools that can be used for this purpose.
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