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CPU Usage vs Cycle

Last response: in CPUs
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November 12, 2012 3:10:54 AM

Just downloaded Win8 and the task manager has two columns: cpu usage (the default one that everyone knows) and a new one: cycle. According to the tool tip, the cycle it is "the current percent of cpu cycle time". My two questions are: Isn't that the same as cpu usage? and if it is, Why are they off by a couple percent randomly?
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More about : cpu usage cycle

November 12, 2012 10:56:12 AM

I am not seeing any such thing on my task manager. Its just CPU, and in the app tab there is CPU time.
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November 12, 2012 4:42:11 PM

go to task manager, click more info, then the details tab, then rightclick on a column tab, and click select columns. You will see it there
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Best solution

November 12, 2012 6:07:38 PM

Modern procesors can execute more than one instruction per clock(superscalar) so it might represent:
CPU -> Instructions executed
Cycle-> clocks used

Also different instructions use different amouth of clocks to complete.
Its just a guess, nothing definitive.
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November 13, 2012 12:06:57 AM

isnt cpu usage cpu time/ elapsed time, not instructions executed?
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November 23, 2012 4:57:47 AM

Best answer selected by damike.
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