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I run ubuntu 11.10 on a Dell inspiron N4050 which has an Intel Core i3 CPU.

After a time of inactivity sometimes few seconds, sometimes 2 or three miutes or even more CPU2 3 and 4 spike then go to zero and only CPU1 still works. when activity is resumed by moving the cursor for example all CPUs are put on.

I would like to post an image but since i'm new i couldn't.

I don't know if putting off the three last cores of the CPU is an option to reduce power consumption or something like that..

Zinou
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1 Answers1

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You guessed it. It is a power-saving feature of the CPU. When the extra cores aren't needed they are turned off.

reverendj1
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