samples/speed/speed.py

   1 import sys
   2 import time
   3
   4 oneMillion = 1000000
   5
   6 class Tester:
   7   def foo(self):
   8     return 1
   9
  10   def beginTimer(self):
  11     self.t1 = time.time()
  12
  13   def endTimer(self, s):
  14     mps = 1/(time.time() - self.t1)
  15     print "Python %s := %0.2f" % (s, mps)
  16
  17   def testSlot(self):
  18     self.beginTimer()
  19     self.x = 1
  20     for i in xrange(oneMillion/8):
  21       self.x; self.x; self.x; self.x;
  22       self.x; self.x; self.x; self.x;
  23     self.endTimer("slotAccesses       ")
  24
  25   def testSetSlot(self):
  26     self.beginTimer()
  27     self.x = 1
  28     for i in xrange(oneMillion/8):
  29       self.x = 1; self.x = 2; self.x = 3; self.x = 4;
  30       self.x = 1; self.x = 2; self.x = 3; self.x = 4;
  31     self.endTimer("slotSets           ")
  32
  33   def testBlock(self):
  34     self.beginTimer()
  35     for i in xrange(oneMillion/8):
  36       self.foo(); self.foo(); self.foo(); self.foo();
  37       self.foo(); self.foo(); self.foo(); self.foo()
  38     self.endTimer("blockActivations   ")
  39
  40   def testInstantiations(self):
  41     self.beginTimer()
  42     for i in xrange(oneMillion/8):
  43       Tester(); Tester(); Tester(); Tester();
  44       Tester(); Tester(); Tester(); Tester();
  45     self.endTimer("instantiations     ")
  46
  47   def testLocals(self):
  48     self.beginTimer()
  49     v = 1
  50     for i in xrange(oneMillion/8):
  51       v; v;  v; v;
  52       v; v;  v; v;
  53     self.endTimer("localAccesses      ")
  54
  55   def testSetLocals(self):
  56     self.beginTimer()
  57     v = 1
  58     for i in xrange(oneMillion/8):
  59       v = 1; v = 2; v = 3; v = 4;
  60       v = 1; v = 2; v = 3; v = 4;
  61     self.endTimer("localSets          ")
  62
  63   def test(self):
  64     print ""
  65     self.testLocals()
  66     self.testSetLocals()
  67     print ""
  68     self.testSlot()
  69     self.testSetSlot()
  70     print ""
  71     self.testBlock()
  72     self.testInstantiations()
  73
  74     import sys
  75     print "Python version := \"%i.%i.%i %s %i\"" % sys.version_info
  76     print ""
  77     print "// values in millions per second"
  78     print ""
  79
  80
  81 Tester().test()
  82