How do you disable Transparent Hugepages in an Amazon AWS environment that doesn't support systemctl or systemd?
Here is a way to keep THP turned off even after reboot.
sudo vi /etc/init.d/disable-transparent-hugepages
#!/bin/sh
### BEGIN INIT INFO
# Provides: disable-transparent-hugepages
# Required-Start: $local_fs
# Required-Stop:
# X-Start-Before: mongod mongodb-mms-automation-agent
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Disable Linux transparent huge pages
# Description: Disable Linux transparent huge pages, to improve
# database performance.
### END INIT INFO
case $1 in start)
if [ -d /sys/kernel/mm/transparent_hugepage ]; then
thp_path=/sys/kernel/mm/transparent_hugepage
elif [ -d /sys/kernel/mm/redhat_transparent_hugepage ]; then
thp_path=/sys/kernel/mm/redhat_transparent_hugepage
else
return 0
fi
echo 'never' > ${thp_path}/enabled
echo 'never' > ${thp_path}/defrag
unset thp_path
;;
esac
sudo chmod 755 /etc/init.d/disable-transparent-hugepages
sudo chkconfig --add disable-transparent-hugepages
http://serverfault.com/questions/688392/disable-thp-and-thp-defrag-on-centos-7-ec2-instance
Here is a way to keep THP turned off even after reboot.
sudo vi /etc/init.d/disable-transparent-hugepages
#!/bin/sh
### BEGIN INIT INFO
# Provides: disable-transparent-hugepages
# Required-Start: $local_fs
# Required-Stop:
# X-Start-Before: mongod mongodb-mms-automation-agent
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Disable Linux transparent huge pages
# Description: Disable Linux transparent huge pages, to improve
# database performance.
### END INIT INFO
case $1 in start)
if [ -d /sys/kernel/mm/transparent_hugepage ]; then
thp_path=/sys/kernel/mm/transparent_hugepage
elif [ -d /sys/kernel/mm/redhat_transparent_hugepage ]; then
thp_path=/sys/kernel/mm/redhat_transparent_hugepage
else
return 0
fi
echo 'never' > ${thp_path}/enabled
echo 'never' > ${thp_path}/defrag
unset thp_path
;;
esac
sudo chmod 755 /etc/init.d/disable-transparent-hugepages
sudo chkconfig --add disable-transparent-hugepages
http://serverfault.com/questions/688392/disable-thp-and-thp-defrag-on-centos-7-ec2-instance