Disabling Transparent Huge Pages

Purpose

Disable transparent huge pages to avoid memory allocation delay.

Method 1

1. Open the grub2-efi.cfg file.

   1	vim /etc/grub2-efi.cfg

2. Search for the vmlinuz-4.14.0-115.el7a.0.1.aarch64 field and add the following field to the end of the line. Separate the two fields with a space.

   "transparent_hugepage=never" 

3. Press Esc, type :wq!, and press Enter to save the file and exit.
4. Restart the server.
5. Check whether the configuration takes effect.

   1	cat /proc/cmdline

   If the command output contains the transparent_hugepage=never field, the transparent huge pages are successfully disabled.

Method 2

1

echo never > /sys/kernel/mm/transparent_hugepage/enabled