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Linux: How to disable CPU? (logically offline)
To disable
:shell> echo 0 > /sys/devices/system/cpu/cpu[X]/online
To check:
shell> cat /pro/cpuinfo or cat /proc/interrupts
To enable
:shell> echo 1 > /sys/devices/system/cpu/cpu[X]/online
Useful doc:
Documentation/cpu-hotplug.txt
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