How to disable transparent_hugepage
Here it shows that the transparent_hugepage value is enabled.
[root@testsrv~]# cat /sys/kernel/mm/transparent_hugepage/enabled
[always] madvise never
Steps:
1. Take backup of /etc/default/grub
#cp -rp /etc/default/grub /etc/default/grub_16May2022
2. Edit the file /etc/default/grub by adding transparent_hugepage=never to the line
GRUB_CMDLINE_LINUX="crashkernel=auto rd.lvm.lv=vg_os/lv_root rd.lvm.lv=vg_os/lv_swap rhgb quiet"
so the entry will be like
GRUB_CMDLINE_LINUX="crashkernel=auto rd.lvm.lv=vg_os/lv_root rd.lvm.lv=vg_os/lv_swap rhgb quiet transparent_hugepage=never"
3. Take backup of file grub.cfg
#cp -pv /boot/efi/EFI/redhat/grub.cfg /boot/efi/EFI/redhat/grub.cfg-bkp
4. Create new grub configuration file
#grub2-mkconfig -o /boot/efi/EFI/redhat/grub.cfg
5. Reboot the server
#reboot
6. Verify whether the value is changed or not
#cat /sys/kernel/mm/transparent_hugepage/enabled
[root@testsrv~]# cat /sys/kernel/mm/transparent_hugepage/enabled
always madvise [never]
Regards,
Kiran B Jaadhav
