redhat linux 7.4关闭透明大页

每一步：

在GRUB_CMDLINE_LINUX加入选项 transparent_hugepage=never 

echo 'GRUB_CMDLINE_LINUX="transparent_hugepage=never"' >>  /etc/default/grub

 

第二步：

重新生成grub配置文件

grub2-mkconfig -o /boot/grub2/grub.cfg
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-3.10.0-693.el7.x86_64
Found initrd image: /boot/initramfs-3.10.0-693.el7.x86_64.img
Found linux image: /boot/vmlinuz-0-rescue-bdd94cf792bd4ac6a087ff2542ba6cd0
Found initrd image: /boot/initramfs-0-rescue-bdd94cf792bd4ac6a087ff2542ba6cd0.img
done

grub2-mkconfig -o /boot/efi/EFI/redhat/grub.cfg
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-3.10.0-693.el7.x86_64
Found initrd image: /boot/initramfs-3.10.0-693.el7.x86_64.img
Found linux image: /boot/vmlinuz-0-rescue-bdd94cf792bd4ac6a087ff2542ba6cd0
Found initrd image: /boot/initramfs-0-rescue-bdd94cf792bd4ac6a087ff2542ba6cd0.img
done

　　

第三步：

重启操作系统

查看是否生效：

[root@athena2db2 ~]# cat /proc/cmdline 
BOOT_IMAGE=/vmlinuz-3.10.0-693.el7.x86_64 root=/dev/mapper/rhel-root ro transparent_hugepage=never
[root@athena2db2 ~]# grep Huge /proc/meminfo 
AnonHugePages:         0 kB
HugePages_Total:       0
HugePages_Free:        0
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB