System Memory:
  - MemTotal: 5327936 kB = ~5.2 GB
  - MemFree: 1208384 kB = ~1.18 GB = 1,180 MB
  - Hugepagesize: 524288 kB = 512 MB

  The calculation in runtest.sh:

  MemFree=$(echo `grep 'MemFree:' /proc/meminfo | awk '{print $2}'` / 1024 - $MEM_LEFT | bc)
  # MemFree = 1208384 / 1024 - 64 = 1180 - 64 = 1,116 MB
  MemAllocOvercommit=`echo $MemFree / 5 | bc`
  # MemAllocOvercommit = 1116 / 5 = 223 MB

when MemAllocOvercommit=128MB and Hugepagesize=512MB, the division 128/512=0, causing the test to be invoked with -a 0 and failing