Related

Can't install php-soap to my PHP 7.0 centos Question Question
GUI for MongoDB needed to mange Meteor app Question Question

Question

How to permanently turn off THP (transparent hugepage)

Posted April 7, 2015 18k views
MongoDBCentOSLinux Commands

I created a droplet with centos 7. In order to let MMS (mms.mongodb.com) manage my mongodb without warning about THP, I did following:

edit /etc/default/grub to add transparent_hugepage=never to GRUB_CMDLINE_LINUX_DEFAULT

run grub2-mkconfig

systemctl stop tuned

systemctl disable tuned

reboot

after reboot I check it with cat /sys/kernel/mm/transparent_hugepage/enabled. Still get [always]. Seems some other services enable it.

How can I permanently disable THP? I also want to disable THP defrag

I don’t want to do it in rc.local as it runs after other services including mongod which will be installed later by MMS.

I don’t want to say goodbye to DO and return to AWS

Add a comment
ukadventure
By:
ukadventure
edited by asb
Add a comment
2 comments

These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.

×
1 answer
asb June 7, 2016

As mentioned in the blogpost linked by markfinkelstein, at DO we add this to rc.local:

if test -f /sys/kernel/mm/transparent_hugepage/enabled; then
   echo never > /sys/kernel/mm/transparent_hugepage/enabled
fi
if test -f /sys/kernel/mm/transparent_hugepage/defrag; then
   echo never > /sys/kernel/mm/transparent_hugepage/defrag
fi

Though if you need to do it another way, the MongoDB documentation provides an init script for this. Of course you could adapt that into a systemd service file, but as systemd can handle legacy init scripts, this is a good cross platform alternative.

Reply Report
Submit an Answer

Related

Looking for something else?

Ask a new question Search for more help