[OS] Hyper-Threading disable or enable

Hyper-Threading 확인하기

#lscpu

Architecture:          x86_64

CPU op-mode(s):        32-bit, 64-bit

Byte Order:            Little Endian

CPU(s):                32

On-line CPU(s) list:   0-31

Thread(s) per core:    2

Core(s) per socket:    8

Socket(s):             2

NUMA node(s):        2

#grep -H . /sys/devices/system/cpu/cpu*/topology/thread_siblings_list

/sys/devices/system/cpu/cpu0/topology/thread_siblings_list:0,16

/sys/devices/system/cpu/cpu17/topology/thread_siblings_list:1,17

/sys/devices/system/cpu/cpu18/topology/thread_siblings_list:2,18

# dmidecode -t processor | grep HTT

Hyper-Threading disable 

# vi /etc/sysconfig/grub

GRUB_TIMEOUT=5

GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"

GRUB_DEFAULT=saved

GRUB_DISABLE_SUBMENU=true

GRUB_TERMINAL_OUTPUT="console"

GRUB_CMDLINE_LINUX="numa=off crashkernel=auto noht rhgb quiet console=tty0"

GRUB_DISABLE_RECOVERY="true"

# grub2-mkconfig -o /boot/grub2/grub.cfg