python编写的benchmark 代码，pythonbenchmark,#!/usr/bin/e
#!/usr/bin/env python# coding: utf-8"""small system Benchmark by jensdiemer.deused fak_test by Dookie alias Fritz Cizmarovhttp://www.python-forum.de/viewtopic.php?t=3355"""__version__ = "0.0.1"### History# v0.0.1# - erste Versionimport timestart_time = time.time()import os, random, sys, operatorif sys.version_info[:2] < (2,2): raise SystemError("need at least Version 2.2 of Python")rnd_mem_size = 10000rnd_mem_count = 100rnd_disk_size = 1000rnd_disk_count = 1000norm_disk_MBsize= 30norm_disk_count = 1000fak_num = 100000class benchmark: def __init__( self ): self.rnd_mem_test() self.rnd_disk_test() self.fak_test() print "="*80 print "complete test duration:" print "%.2fsec" % (time.time() - start_time) print "="*80 def print_process( self, i, total ): "allg. Fortschrittanzeige" i += 1 tresh = total / 10 if tresh == 0: tresh = 1 if i % tresh == 0: duration = time.time() - start_time print "%3.i%% %4.i/%i %.2fsec" % ( round(float(i)/total*100), i, total, duration) def rnd_mem_test( self ): print "Random-MEM Test" print "-"*80 print "Creating %i random-Blocks with a Size of %iBytes" % ( rnd_mem_count, rnd_mem_size ) for i in range( rnd_mem_count ): trash = [ chr( random.randint(0,255) ) for r in range(rnd_mem_size) ] self.print_process(i, rnd_mem_count) def rnd_disk_test( self ): print print "Random-DISK Test" try: testfile = file( "benchtest.tmp", "w" ) except Exception, e: print "Can't create Testfile:",e sys.exit(1) print "-"*80 KBsize = rnd_disk_count * rnd_disk_size / 1024 print "Write %i random-Blocks à %iBytes (total %iKB)" % ( rnd_disk_count, rnd_disk_size, KBsize ) for i in range( rnd_disk_count ): testfile.write( "".join( [ chr( random.randint(0,255) ) for r in range(rnd_disk_size) ] ) ) self.print_process(i, rnd_disk_count) testfile.close() testfile = file( "benchtest.tmp", "w" ) print "-"*80 print "Test Disk writing speed" blockMBsize = norm_disk_MBsize * 1024 MBytes = blockMBsize * norm_disk_count / 1024 / 1024 print "Writes %iMBytes (NULL-Bytes)" % ( MBytes ) NULLblock = " " * blockMBsize disk_start_time = time.time() for i in xrange( norm_disk_count ): testfile.write( NULLblock ) self.print_process( i, norm_disk_count ) disk_end_time = time.time() testfile.close() print "-"*80 print "%iMB/sec" % ( MBytes / ( disk_end_time-disk_start_time ) ) try: # lösche Inhalt des Tempfile testfile = file( "benchtest.tmp", "w" ) testfile.close() except: pass try: # Lösche Datei selber os.remove( "benchtest.tmp" ) except Exception, e: print "Can't delete Testfile:",e sys.exit(1) def fak_test( self ): print print "fak Test" print "-"*80 def fak_recursive(n): if n > 2: return n * fak_recursive(n-1) else: return n def fak_iter_while(n): res = n while n > 2: n -= 1 # entspricht n = n - 1 res *= n # ginge auch als res = res * n return res def fak_iter_for(n): res = n for n in xrange(2,n): res *= n return res fak_lambda = lambda n: reduce(operator.mul, xrange(2,n),n) def test(funktion_name, f): print "%16s: %d Berechnungen..." % (funktion_name, fak_num), values = range(1,101)*(fak_num/100) t_start = time.time() for val in values: tmp = f(val) print "%.2fsec" % (time.time() - start_time) test("fak_recursive", fak_recursive) test("fak_iter_while", fak_iter_while) test("fak_iter_for", fak_iter_for) test("fak_lambda", fak_lambda)if __name__ == "__main__": benchmark()
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