Showing content from http://svn.python.org/projects/python/branches/test_subprocess_10826/Tools/pybench/clockres.py below:
#!/usr/bin/env python """ clockres - calculates the resolution in seconds of a given timer. Copyright (c) 2006, Marc-Andre Lemburg (mal@egenix.com). See the documentation for further information on copyrights, or contact the author. All Rights Reserved. """ import time TEST_TIME = 1.0 def clockres(timer): d = {} wallclock = time.time start = wallclock() stop = wallclock() + TEST_TIME spin_loops = range(1000) while 1: now = wallclock() if now >= stop: break for i in spin_loops: d[timer()] = 1 values = sorted(d.keys()) min_diff = TEST_TIME for i in range(len(values) - 1): diff = values[i+1] - values[i] if diff < min_diff: min_diff = diff return min_diff if __name__ == '__main__': print('Clock resolution of various timer implementations:') print('time.clock: %10.3fus' % (clockres(time.clock) * 1e6)) print('time.time: %10.3fus' % (clockres(time.time) * 1e6)) try: import systimes print('systimes.processtime: %10.3fus' % (clockres(systimes.processtime) * 1e6)) except ImportError: pass
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