CPU off power consumption

Giuliano Pochini pochini at shiny.it
Sat Nov 26 22:38:05 EST 2005

Out of curiosity, what's the difference between a cpu that has never been
enabled and one that has been disabled with echo 0>/sys/.../online ? It
happens that when I boot with maxcpus=0 the temperature always stays low
enoung that the fan never spins up. If I enable and then I immediately
disable the 2nd cpu, the temperature goes a few degrees up. I have a dual


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