编辑grub文件

shell
vim /etc/default/grub

找到GRUB_CMDLINE_LINUX参数，并添加default_hugepagesz=1G hugepagesz=1G hugepages=4

file:/etc/default/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="default_hugepagesz=1G hugepagesz=1G hugepages=4 crashkernel=auto resume=/dev/mapper/rl-swap rd.lvm.lv=rl/root rd.lvm.lv=rl/swap rhgb quiet"
GRUB_DISABLE_RECOVERY="true"
GRUB_ENABLE_BLSCFG=true

应用配置并重启系统

shell
grub2-mkconfig -o /boot/grub2/grub.cfg
reboot

查看配置结果

shell
cat /proc/meminfo|grep -i huge