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