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python3.2  3.2.2
Public Member Functions | Public Attributes | Static Public Attributes
Calls.PythonMethodCalls Class Reference
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List of all members.

Public Member Functions

def test
def calibrate
def get_timer
def compatible
def calibrate_test
def run
def stat

Public Attributes

 y
 t
 s
 last_timing
 warp
 times

Static Public Attributes

float version = 2.0
 Instance variables that each test should override.
int operations = 5
int rounds = 30000
int is_a_test = 1
 Internal variables.
tuple last_timing = (0.0, 0.0, 0.0)
int warp = 1
 calibration_runs = CALIBRATION_RUNS
 overhead_times = None
list times = []
 timer = TIMER_PLATFORM_DEFAULT

Detailed Description

Definition at line 291 of file Calls.py.


Member Function Documentation

Calibrate the test.

    This method should execute everything that is needed to
    setup and run the test - except for the actual operations
    that you intend to measure. pybench uses this method to
    measure the test implementation overhead.

Reimplemented from pybench.Test.

Definition at line 404 of file Calls.py.

00404 
00405     def calibrate(self):
00406 
00407         class c:
00408 
00409             x = 2
00410             s = 'string'
00411 
00412             def f(self):
00413 
00414                 return self.x
00415 
00416             def j(self,a,b):
00417 
00418                 self.y = a
00419                 self.t = b
00420 
00421             def k(self,a,b,c=3):
00422 
00423                 self.y = a
00424                 self.s = b
00425                 self.t = c
00426 
00427         o = c
00428 
00429         for i in range(self.rounds):
00430             pass

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def pybench.Test.calibrate_test (   self) [inherited]

Definition at line 262 of file pybench.py.

00262 
00263     def calibrate_test(self):
00264 
00265         if self.calibration_runs == 0:
00266             self.overhead_times = [0.0]
00267             return
00268 
00269         calibrate = self.calibrate
00270         timer = self.get_timer()
00271         calibration_loops = range(CALIBRATION_LOOPS)
00272 
00273         # Time the calibration loop overhead
00274         prep_times = []
00275         for i in range(self.calibration_runs):
00276             t = timer()
00277             for i in calibration_loops:
00278                 pass
00279             t = timer() - t
00280             prep_times.append(t / CALIBRATION_LOOPS)
00281         min_prep_time = min(prep_times)
00282         if _debug:
00283             print()
00284             print('Calib. prep time     = %.6fms' % (
00285                 min_prep_time * MILLI_SECONDS))
00286 
00287         # Time the calibration runs (doing CALIBRATION_LOOPS loops of
00288         # .calibrate() method calls each)
00289         for i in range(self.calibration_runs):
00290             t = timer()
00291             for i in calibration_loops:
00292                 calibrate()
00293             t = timer() - t
00294             self.overhead_times.append(t / CALIBRATION_LOOPS
00295                                        - min_prep_time)
00296 
00297         # Check the measured times
00298         min_overhead = min(self.overhead_times)
00299         max_overhead = max(self.overhead_times)
00300         if _debug:
00301             print('Calib. overhead time = %.6fms' % (
00302                 min_overhead * MILLI_SECONDS))
00303         if min_overhead < 0.0:
00304             raise ValueError('calibration setup did not work')
00305         if max_overhead - min_overhead > 0.1:
00306             raise ValueError(
00307                 'overhead calibration timing range too inaccurate: '
00308                 '%r - %r' % (min_overhead, max_overhead))

def pybench.Test.compatible (   self,
  other 
) [inherited]
Return 1/0 depending on whether the test is compatible
    with the other Test instance or not.

Definition at line 250 of file pybench.py.

00250 
00251     def compatible(self, other):
00252 
00253         """ Return 1/0 depending on whether the test is compatible
00254             with the other Test instance or not.
00255 
00256         """
00257         if self.version != other.version:
00258             return 0
00259         if self.rounds != other.rounds:
00260             return 0
00261         return 1

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def pybench.Test.get_timer (   self) [inherited]
Return the timer function to use for the test.

Definition at line 243 of file pybench.py.

00243 
00244     def get_timer(self):
00245 
00246         """ Return the timer function to use for the test.
00247 
00248         """
00249         return get_timer(self.timer)

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def pybench.Test.run (   self) [inherited]
Run the test in two phases: first calibrate, then
    do the actual test. Be careful to keep the calibration
    timing low w/r to the test timing.

Definition at line 309 of file pybench.py.

00309 
00310     def run(self):
00311 
00312         """ Run the test in two phases: first calibrate, then
00313             do the actual test. Be careful to keep the calibration
00314             timing low w/r to the test timing.
00315 
00316         """
00317         test = self.test
00318         timer = self.get_timer()
00319 
00320         # Get calibration
00321         min_overhead = min(self.overhead_times)
00322 
00323         # Test run
00324         t = timer()
00325         test()
00326         t = timer() - t
00327         if t < MIN_TEST_RUNTIME:
00328             raise ValueError('warp factor too high: '
00329                              'test times are < 10ms')
00330         eff_time = t - min_overhead
00331         if eff_time < 0:
00332             raise ValueError('wrong calibration')
00333         self.last_timing = (eff_time, t, min_overhead)
00334         self.times.append(eff_time)

def pybench.Test.stat (   self) [inherited]
Return test run statistics as tuple:

    (minimum run time,
     average run time,
     total run time,
     average time per operation,
     minimum overhead time)

Definition at line 357 of file pybench.py.

00357 
00358     def stat(self):
00359 
00360         """ Return test run statistics as tuple:
00361 
00362             (minimum run time,
00363              average run time,
00364              total run time,
00365              average time per operation,
00366              minimum overhead time)
00367 
00368         """
00369         runs = len(self.times)
00370         if runs == 0:
00371             return 0.0, 0.0, 0.0, 0.0
00372         min_time = min(self.times)
00373         total_time = sum(self.times)
00374         avg_time = total_time / float(runs)
00375         operation_avg = total_time / float(runs
00376                                            * self.rounds
00377                                            * self.operations)
00378         if self.overhead_times:
00379             min_overhead = min(self.overhead_times)
00380         else:
00381             min_overhead = self.last_timing[2]
00382         return min_time, avg_time, total_time, operation_avg, min_overhead

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Run the test.

    The test needs to run self.rounds executing
    self.operations number of operations each.

Reimplemented from pybench.Test.

Definition at line 297 of file Calls.py.

00297 
00298     def test(self):
00299 
00300         class c:
00301 
00302             x = 2
00303             s = 'string'
00304 
00305             def f(self):
00306 
00307                 return self.x
00308 
00309             def j(self,a,b):
00310 
00311                 self.y = a
00312                 self.t = b
00313                 return self.y
00314 
00315             def k(self,a,b,c=3):
00316 
00317                 self.y = a
00318                 self.s = b
00319                 self.t = c
00320 
00321         o = c()
00322 
00323         for i in range(self.rounds):
00324 
00325             o.f()
00326             o.f()
00327             o.f()
00328             o.f()
00329             o.f()
00330             o.f()
00331             o.j(i,i)
00332             o.j(i,i)
00333             o.j(i,2)
00334             o.j(i,2)
00335             o.j(2,2)
00336             o.k(i,i)
00337             o.k(i,2)
00338             o.k(i,2,3)
00339             o.k(i,i,c=4)
00340 
00341             o.f()
00342             o.f()
00343             o.f()
00344             o.f()
00345             o.f()
00346             o.f()
00347             o.j(i,i)
00348             o.j(i,i)
00349             o.j(i,2)
00350             o.j(i,2)
00351             o.j(2,2)
00352             o.k(i,i)
00353             o.k(i,2)
00354             o.k(i,2,3)
00355             o.k(i,i,c=4)
00356 
00357             o.f()
00358             o.f()
00359             o.f()
00360             o.f()
00361             o.f()
00362             o.f()
00363             o.j(i,i)
00364             o.j(i,i)
00365             o.j(i,2)
00366             o.j(i,2)
00367             o.j(2,2)
00368             o.k(i,i)
00369             o.k(i,2)
00370             o.k(i,2,3)
00371             o.k(i,i,c=4)
00372 
00373             o.f()
00374             o.f()
00375             o.f()
00376             o.f()
00377             o.f()
00378             o.f()
00379             o.j(i,i)
00380             o.j(i,i)
00381             o.j(i,2)
00382             o.j(i,2)
00383             o.j(2,2)
00384             o.k(i,i)
00385             o.k(i,2)
00386             o.k(i,2,3)
00387             o.k(i,i,c=4)
00388 
00389             o.f()
00390             o.f()
00391             o.f()
00392             o.f()
00393             o.f()
00394             o.f()
00395             o.j(i,i)
00396             o.j(i,i)
00397             o.j(i,2)
00398             o.j(i,2)
00399             o.j(2,2)
00400             o.k(i,i)
00401             o.k(i,2)
00402             o.k(i,2,3)
00403             o.k(i,i,c=4)

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Member Data Documentation

pybench.Test.calibration_runs = CALIBRATION_RUNS [static, inherited]

Definition at line 206 of file pybench.py.

int pybench.Test.is_a_test = 1 [static, inherited]

Internal variables.

Definition at line 197 of file pybench.py.

tuple pybench.Test.last_timing = (0.0, 0.0, 0.0) [static, inherited]

Definition at line 200 of file pybench.py.

Definition at line 332 of file pybench.py.

Reimplemented from pybench.Test.

Definition at line 294 of file Calls.py.

pybench.Test.overhead_times = None [static, inherited]

Definition at line 209 of file pybench.py.

Reimplemented from pybench.Test.

Definition at line 295 of file Calls.py.

Definition at line 317 of file Calls.py.

Definition at line 311 of file Calls.py.

pybench.Test.timer = TIMER_PLATFORM_DEFAULT [static, inherited]

Definition at line 215 of file pybench.py.

list pybench.Test.times = [] [static, inherited]

Definition at line 212 of file pybench.py.

pybench.Test.times [inherited]

Definition at line 234 of file pybench.py.

float Calls.PythonMethodCalls.version = 2.0 [static]

Instance variables that each test should override.

Reimplemented from pybench.Test.

Definition at line 293 of file Calls.py.

int pybench.Test.warp = 1 [static, inherited]

Definition at line 203 of file pybench.py.

pybench.Test.warp [inherited]

Definition at line 224 of file pybench.py.

Definition at line 310 of file Calls.py.


The documentation for this class was generated from the following file: