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

nadav123

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Mar 2, 2020
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Hello, i see it in the docs of redis:

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

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Oct 19, 2014
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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

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Mar 2, 2020
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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 :)
 

nadav123

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Mar 2, 2020
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¨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:

[[email protected] ~]# cat /sys/kernel/mm/transparent_hugepage/enabled
[always] madvise never


or need new commend to adjust it?