Toggle Hugepages Support Linux

[Snider 72]

Posted by HashVault: 

This script will allow you to turn huge page support on and off on Linux  

#!/usr/bin/env bash
 
script=`basename "$0"`
HPS=`grep Hugepagesize /proc/meminfo | awk -F" " {'print $2'}`
NC=`grep -c processor /proc/cpuinfo`
NHP=$(($(($NC*2200/$HPS))+1))
case $@ in
 
        enable)
                echo $NHP > /proc/sys/vm/nr_hugepages
                ulimit -l $(($NHP * $HPS))
                echo "Huge pages enabled"
                ;;
 
        disable)
                echo 0 > /proc/sys/vm/nr_hugepages
                echo "Huge pages disabled"
                ;;
 
        *)
                echo -e "Usage: \n$script enable - Enabling Huge Pages\n$script disable - Disabling Huge Pages"
                ;;
 
esac

 

[Wor3d 125]

For those who don't know how to run the script:

1. Save it in some text editor (vim/nano/some gui editor) as "hugepages.sh" (for example)

2. Ensure that you have terminal in the same direction as the script (use cd to enter directories and cd .. to go back)

3. Run command "chmod +x hugepages.sh"

4. run "sudo ./hugepages.sh enable" to enable hugepages and "sudo ./hugepages.sh disable" to disable them