chcpu
TLDR
Disable one or more CPUs
$ chcpu -d [1,3]
Enable one or more CPU ranges$ chcpu -e [1-3,5-7]
SYNOPSIS
chcpu [options]
DESCRIPTION
chcpu enables and disables individual CPUs on a running system. This is useful for power management, testing, or isolating CPUs for specific workloads.
CPUs are specified by their logical IDs, which can be found in /proc/cpuinfo or using lscpu.
PARAMETERS
-d, --disable cpus
Disable specified CPUs-e, --enable cpus
Enable specified CPUs-c, --configure cpus
Configure CPUs (make available for enabling)-g, --deconfigure cpus
Deconfigure CPUs-r, --rescan
Rescan for CPUs
CAVEATS
Cannot disable CPU 0 on most systems. Disabling CPUs migrates processes to remaining CPUs. Requires root privileges. Not all hardware supports CPU hotplug.
