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documentation.suse.com / Documentazione di SUSE Linux Enterprise Server / Administration Guide / System / VM Guest
Applies to SUSE Linux Enterprise Server 15 SP1

28 VM Guest

This chapter contains additional information on when SUSE Linux Enterprise Server is used in a virtual machine.

28.1 Adding and Removing CPUs

Some virtualization environments allow adding or removing CPUs while the virtual machine is running.

For safe removal of CPUs, first deactivate them by executing

# echo 0 > /sys/devices/system/cpu/cpuX/online

Replace X with the CPU number. To bring a CPU back online, execute

# echo 1 > /sys/devices/system/cpu/cpuX/online