Created
August 15, 2018 09:18
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SystemV Init script to disable hugepages for MongoDB
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#!/bin/bash | |
### 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' > ${thp_path}/defrag | |
re='^[0-1]+$' | |
if [[ $(cat ${thp_path}/khugepaged/defrag) =~ $re ]] | |
then | |
# RHEL 7 | |
echo 0 > ${thp_path}/khugepaged/defrag | |
else | |
# RHEL 6 | |
echo 'no' > ${thp_path}/khugepaged/defrag | |
fi | |
unset re | |
unset thp_path | |
;; | |
esac |
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