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jmp
 Post subject: Interpreting Graphs
PostPosted: Thu Feb 18, 2010 11:17 pm 
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Joined: Thu Feb 18, 2010 11:11 pm
Posts: 4
Website: http://japanisshinto.com
Location: Rochester, New York
I'm curious about the CPU graph on my control panel is actually measuring. Is it the average CPU utilization across all four processors, the maximum utilization of the four processors, or something else?
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Gnewt
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PostPosted: Thu Feb 18, 2010 11:23 pm 
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Joined: Thu Feb 18, 2010 11:22 pm
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Website: http://www.gnewt.at
I could be wrong, but the way it was explained to me is that it's measure your CPU usage at the time for the entire host machine. That is, if you use enough CPU power to warrant all four processors, the graph will show 400%.
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different
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PostPosted: Thu Feb 18, 2010 11:45 pm 
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Joined: Tue Mar 11, 2008 4:08 pm
Posts: 8
In Linux, the usage percentages of all CPUs are summed. Ergo, with 4 processors, at full usage the percentage is 400%.

If, say, the percentage on your graph is 20%, that could mean anything from one CPU is at 20% usage while the other three are idle, or all four CPUs are at 5% usage.
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