if you use command "top" and found the ksoftirqd use most CPU

if you use command “top” and found the ksoftirqd use most CPU,
add a parameter to the grub.conf:
nohz=off

details of grub.conf :

menuentry “VyOS vyos_1.1.6 (KVM console)” {
linux /boot/vyos_1.1.6/vmlinuz boot=live quiet vyatta-union=/boot/vyos_1.1.6 console=ttyS0,9600 console=tty0 nohz=off
initrd /boot/vyos_1.1.6/initrd.img
}