How to disable Transparent Hugepages?

English Install/Boot/Login
1

I need to test some applications with the MySQL/MariaDB storage engine"TokuDB". TokuDB wll not work with Transparent Hugepages enabled as explained here https://mariadb.com/kb/en/mariadb/documentation/storage-engines/tokudb/how-to-enable-tokudb-in-mariadb/).

I can do this

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

… and it works for the session, but not after a reboot. So I want to do it during boot. I found some resources (like http://unix.stackexchange.com/questions/99154/disable-transparent-hugepages) how to add to GRUB configuration. But I found nothing specific for SuSE and the procedures for Oracle Linux, Fedora etc. are not directly usable for me. Probably just because I cannot figure out what&where the relevant file is on SuSE.

Can somebody help?

2

YAST2 -> Bootloader -> Kernel Parameters.

Add transparent_hugepage=never to Optional Kernel Command Line Parameter at the end, like after “showopts” and press OK. And you’re done. It’ll take effect on the next reboot.

3

Thanks … will give it a try 2night!

4

Worked like a charm. Thanks.

5

OpenSUSE Tumbleweed Optional Kernel Command Line Parameter

showopts iommu=noaperture transparent_hugepage=never

but

cat /sys/kernel/mm/transparent_hugepage/enabled
always [madvise] never

I do not be surprised if this is due to systemd.

6

Might be. But that things changed is to be expected when you come back to such an old thread.

So please. When you have a problem with a recent version of openSUSE, start a new thread with a good title. You have much more chances that somebody will tune in then, then you have now.