Disabling Transparent Huge Pages

Purpose

Disable transparent huge pages to avoid memory allocation delay.

Procedure

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. Save the configuration and exit. Then, restart the server.
4. 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. Enter the value of transparent_hugepage in the command line.

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