Update the way to keep THP disabled (#1366)

* Update the way to keep THP disabled

* Update 6.kernel-config.md

docs-2.0/5.configurations-and-logs/1.configurations/6.kernel-config.md

@@ -52,14 +52,16 @@ These values control the dirty data cache for the system. For write-intensive sc
 
 ### Transparent huge page
 
-For better delay performance, you must disable the transparent huge pages (THP). The command is:
+For better delay performance, you must run the following commands to disable the transparent huge pages (THP).
 
 ```bash
 root# echo never > /sys/kernel/mm/transparent_hugepage/enabled
 root# echo never > /sys/kernel/mm/transparent_hugepage/defrag
 root# swapoff -a && swapon -a
 ```
 
+To prevent THP from being enabled again after the system restarts, you can modify the GRUB configuration file or `/etc/rc.local` to disable THP automatically upon system startup.
+
 ## Networking
 
 ### net.ipv4.tcp_slow_start_after_idle