CPU Hotswapping and how to disable processors
Nov 19, 2009, 18:33 (0 Talkback[s])
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"I stumbled over it in the 2.6.32 menuconfig and couldn't wonder
if it actually works. So I had a look and found this gem:
# cat /proc/interrupts | grep CPU
CPU0 CPU1 CPU2 CPU3
"Very boring, 4 processors.
echo 0 > /sys/devices/system/cpu/cpu3/online
"And we just knocked out one!"