如何在 Ubuntu 16.04LTS 中禁用透明大页面 (THP)

Question

I am setting up an ambari cluster with 3 virtualbox VMs running Ubuntu 16.04LTS. However I get the below warning:

The following hosts have Transparent Huge Pages (THP) enabled. 
THP should be disabled to avoid potential Hadoop performance issues.

How can I disable THP in Ubuntu 16.04?

Answer 1

Did you try this command:

sudo su
echo never > /sys/kernel/mm/transparent_hugepage/enabled

?

Alternatively, you may install hugepages

sudo su
apt-get install hugepages
hugeadm --thp-never

As mentioned by @Anthony , the effect would not persist after a reboot. Use your distribution-specific method to do that every time after reboot.

Answer 2

Install :

sudo apt install hugepages

Then run :

sudo hugeadm --thp-never

To persist the changes you can add this last command to /etc/rc.local

Answer 3

To disable Transparent Huge Pages (THP) permanently choose one of the following options:

1. Via GRUB options (preferred):

   Edit /etc/default/grub to add transparent_hugepage=never to the GRUB_CMDLINE_LINUX_DEFAULT option:

    GRUB_CMDLINE_LINUX_DEFAULT="transparent_hugepage=never quiet splash"

After that, run update-grub command. (Need reboot to take effect)

2. With rc.local:

Edit /etc/rc.local and put following script before exit 0

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

* To avoid reboot (as mentioned before), you can disable it by # echo never > /sys/kernel/mm/transparent_hugepage/enabled command.

Answer 4

下面的 3 个命令修复了 Ubuntu(14.x/16.x) 上的问题，并使其在系统启动时持久存在。

1. sudo apt-get install hugepages
2. sudo hugeadm --thp-never
3. sudo /bin/sed -i '$i /usr/bin/hugeadm --thp-never' /etc/rc.local

Answer 5

All of these answers are out of date. Tried all of them, and the values keep getting overwritten.

The guide here actually works: https://docs.mongodb.com/manual/tutorial/transparent-huge-pages/

It needs to be a service that runs at startup properly, just follow this guide

Worked on Ubuntu 19.04, finally suppressed the redis warnings