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#!/bin/bash
#please run as root
#we need 256M, below is the size in kB
needmem=262144
mnt=./huge
exitcode=0
#get pagesize and freepages from /proc/meminfo
while read name size unit; do
if [ "$name" = "HugePages_Free:" ]; then
freepgs=$size
fi
if [ "$name" = "Hugepagesize:" ]; then
pgsize=$size
fi
done < /proc/meminfo
#set proper nr_hugepages
if [ -n "$freepgs" ] && [ -n "$pgsize" ]; then
nr_hugepgs=`cat /proc/sys/vm/nr_hugepages`
needpgs=`expr $needmem / $pgsize`
if [ $freepgs -lt $needpgs ]; then
lackpgs=$(( $needpgs - $freepgs ))
echo $(( $lackpgs + $nr_hugepgs )) > /proc/sys/vm/nr_hugepages
if [ $? -ne 0 ]; then
echo "Please run this test as root"
exit 1
fi
fi
else
echo "no hugetlbfs support in kernel?"
exit 1
fi
mkdir $mnt
mount -t hugetlbfs none $mnt
echo "--------------------"
echo "running hugepage-mmap"
echo "--------------------"
./hugepage-mmap
if [ $? -ne 0 ]; then
echo "[FAIL]"
exitcode=1
else
echo "[PASS]"
fi
shmmax=`cat /proc/sys/kernel/shmmax`
shmall=`cat /proc/sys/kernel/shmall`
echo 268435456 > /proc/sys/kernel/shmmax
echo 4194304 > /proc/sys/kernel/shmall
echo "--------------------"
echo "running hugepage-shm"
echo "--------------------"
./hugepage-shm
if [ $? -ne 0 ]; then
echo "[FAIL]"
exitcode=1
else
echo "[PASS]"
fi
echo $shmmax > /proc/sys/kernel/shmmax
echo $shmall > /proc/sys/kernel/shmall
echo "--------------------"
echo "running map_hugetlb"
echo "--------------------"
./map_hugetlb
if [ $? -ne 0 ]; then
echo "[FAIL]"
exitcode=1
else
echo "[PASS]"
fi
#cleanup
umount $mnt
rm -rf $mnt
echo $nr_hugepgs > /proc/sys/vm/nr_hugepages
exit $exitcode
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