Performancescript

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

i=0
wtime1 = time.mktime(time.localtime())
while True:
        filename = 'dsktst' + str(i)
        f = file(filename, 'w')
        os.system("dd if=/dev/zero of="+filename+" bs=1024 count=100")
        f.close( )
        i = i + 1
        if i == 10000:
                break
        os.system("sync")
wtime2 = time.mktime(time.localtime())
wtotal = wtime2 - wtime1
print ""
print ""
print "Total time to write", i,"files is == ",wtotal