Cron job for Kernel (can or not) - transparent_hugepage/enabled

[nadav123]

Hello, i see it in the docs of redis:

Redis administration

Advice for configuring and managing Redis in production

redis.io

In the old Redis, you need to put it in a script any time you reboot the server, the script shot it.
i suspect maybe better to do a cron job for huge page every day / hour, it will shoot every hour or day (this why i asking here):

50 * * * * root echo madvise > /sys/kernel/mm/transparent_hugepage/enabled

It something i can do?
Or it can cause issue with the kernel if i will shoot the command line too much?

 

[cPRex]

Hey there! Once the change is made, it should stick and not need to be reapplied on each reboot. The best way to confirm would be to run the echo statement once, and then reboot the system and confirm it is still in place.

 

[nadav123]

How can i confirm it?

Because of Redis older versions, it shows errors in the logs any time i reboot the server.
On Redis 7 its recommendation, but i prefer to confirm it as you said (i little suspect on it)

if you can tell me, what commend line can check it after i reboot the server it will be great

 

[cPRex]

You would just want to check the file to see if the text is still there:

cat /sys/kernel/mm/transparent_hugepage/enabled

 

[nadav123]

[root@server ~]# cat /sys/kernel/mm/transparent_hugepage/enabled
[always] madvise never

i have “never” too ( i run it one time with never when i install the old Redis via EA4 )

The output is good? Even we have both: "never" and "madvise"?

 

[cPRex]

The command mentioned in this thread would only add "madvise" to the end of that file. If anything else is in there, it isn't related to these changes and is likely fine as well.

 

[nadav123]

¨never¨ was recommended in the old Redis (all of them except Redis 7)

I did one time when i install the old Redis, in the Redis 3 (EA4 WHM Interface):
never > /sys/kernel/mm/transparent_hugepage/enabled

this why the NEVER is there,

you sure don't need to fix it? Or it can stay like this:
[root@server ~]# cat /sys/kernel/mm/transparent_hugepage/enabled
[always] madvise never


or need new commend to adjust it?

 

[cPRex]

Like I've mentioned before, I'm not sure about anything related to Redis as it's not something we handle on the cPanel side just yet. I would leave things in place how they are now and see if that works well.