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#!/bin/bash -x
# check and setup the hugepages
SYS_HUGEPAGE=$(cat /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages)
hugepageFree=$(cat /sys/kernel/mm/hugepages/hugepages-2048kB/free_hugepages)
MOUNT=$(mount | grep /mnt/nstackhuge)
count=$(mount | grep /mnt/nstackhuge | wc -l)
while [ "${MOUNT}" != "" ] || [ "${count}" -ne 0 ]
do
sudo umount /mnt/nstackhuge
sleep 1
MOUNT=$(mount | grep /mnt/nstackhuge)
count=$[$count -1]
done
if [ ${SYS_HUGEPAGE} -lt 1536 ] || [ $hugepageFree -eq 0 ]; then
sock_count=$(lscpu | grep 'Socket(s):' | head -1 | awk '{print $2}')
ls -l /sys/devices/system/node/
while [ "${sock_count}" -ne 0 ]
do
sock_count=$[$sock_count - 1]
echo 1536 | sudo tee /sys/devices/system/node/node"$sock_count"/hugepages/hugepages-2048kB/nr_hugepages
done
sudo mkdir -p /mnt/nstackhuge
sudo mount -t hugetlbfs -o pagesize=2M none /mnt/nstackhuge/
test $? -eq 0 || exit 1
else
sudo mkdir -p /mnt/nstackhuge
sudo mount -t hugetlbfs -o pagesize=2M none /mnt/nstackhuge/
fi
cat /proc/meminfo
exit 0
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