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[mongo] How to resolve transparent_hugepage issue

  1. Open /etc/init/mongod.conf file.
  2. Add the lines below immediately after chown $DEAMONUSER /var/run/mongodb.pid and before end script.
  3. Restart mongod (service mongod restart).
Here are the lines to add to /etc/init/mongod.conf:
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

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