====== iozone tests ======

iozone command: iozone -c -s 12g -r 4k -i6 -i7 -+n -w -f ./write_test.out

stg1 local ext4:
        KB  reclen   fwrite   fread
  12582912       4   189072 8765324

stg3 local gluster replica2: (~100% glusterfs cpu és ~25% glusterfsd)
        KB  reclen   fwrite   fread
  12582912       4    71346  144241

stg1 gluster client: (~100% glusterfs cpu)
        KB  reclen   fwrite   fread
  12582912       4    48306  105914


iozone command: iozone -c -s 32g -r 4k -i6 -i7 -+n -w -f ./write_test.out

stg1 gluster client: (~100% glusterfs cpu)
        KB  reclen   fwrite   fread
  33554432       4    48403  101672

stg1 local ext4:
        KB  reclen   fwrite   fread
  33554432       4   162836  199328