#!/usr/bin/env python import sys import os import time times = [] for x in xrange(5): t0 = time.time() os.spawnvp(os.P_WAIT, sys.argv[1], sys.argv[1:]) t = time.time() - t0 times.append(t) print '+++', t print 'all:', times print 'min %s max %s diff %s' % (min(times), max(times), (max(times) - min(times)))