#!/usr/bin/python
import sys
import time
import os

# 500k of data to write
data = "*" * 524288
count = 4096

# record open time and open the file
start = time.time()
f = os.open(sys.argv[1], os.O_WRONLY | os.O_CREAT | os.O_TRUNC)

# open done
open_end = time.time()

# write 2G and track write end
while count:
    os.write(f, data)
    count -= 1
write_end = time.time()

# sync the file and track sync end
os.fsync(f)
sync_end = time.time()

# close the file and track close end
os.close(f)
close_end = time.time()

# Now print each chunk of time
print """Time in seconds
open  %f
write %f
fsync %f
close %f
""" % (open_end - start, write_end - open_end,
               sync_end - write_end, close_end - sync_end)

# Total time spend on creating the file
print "Total time: %f seconds" % (close_end - start)