在RedHat 7中关闭transparent_hugepage

                                     在RedHat 7中关闭transparent_hugepage


   从rhel 6.2开始支持transparnt_hugepage,但是对于数据库类应用需要关闭transparent_hugepate,
比如mongodb或oracle都需要关闭.
  
GRUB_CMDLINE_LINUX="rd.lvm.lv=rhel/root crashkernel=auto  rd.lvm.lv=rhel/swap vconsole.font=latarcyrheb-sun16
 vconsole.keymap=us rhgb quiet transparent_hugepage=never"


重启竟然没有禁止掉


[mongo@localhost transparent_hugepage]$ cat enabled
[always] madvise never


[mongo@localhost transparent_hugepage]$ ps -eaf | grep khugepaged
root      1355     2  0 20:59 ?        00:00:00 [khugepaged]
mongo     2455  2294  0 21:03 pts/1    00:00:00 grep --color=auto khugepaged




重新编译grub2，再次启动


[root@localhost transparent_hugepage]# grub2-mkconfig -o /boot/grub2/grub.cfg
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-3.10.0-123.el7.x86_64
Found initrd image: /boot/initramfs-3.10.0-123.el7.x86_64.img
Found linux image: /boot/vmlinuz-0-rescue-c183df792ee5451eb179923e81209e30
Found initrd image: /boot/initramfs-0-rescue-c183df792ee5451eb179923e81209e30.img
done




[root@localhost transparent_hugepage]# systemctl disable tuned


总算禁止了transparent_hugepate


[root@localhost transparent_hugepage]# cat enabled 
always madvise [never]