[Python-checkins] cpython: Remove pystone microbenchmark
victor.stinner
python-checkins at python.org
Tue Sep 13 05:49:21 EDT 2016
https://hg.python.org/cpython/rev/e03c1b6830fd
changeset: 103752:e03c1b6830fd
user: Victor Stinner <victor.stinner at gmail.com>
date: Tue Sep 13 11:49:06 2016 +0200
summary:
Remove pystone microbenchmark
Issue #15369. Please use the new "performance" benchmark suite.
files:
Lib/test/pystone.py | 277 --------------------------------
Misc/NEWS | 8 +-
2 files changed, 4 insertions(+), 281 deletions(-)
diff --git a/Lib/test/pystone.py b/Lib/test/pystone.py
deleted file mode 100755
--- a/Lib/test/pystone.py
+++ /dev/null
@@ -1,277 +0,0 @@
-#! /usr/bin/env python3
-
-"""
-"PYSTONE" Benchmark Program
-
-Version: Python/1.2 (corresponds to C/1.1 plus 3 Pystone fixes)
-
-Author: Reinhold P. Weicker, CACM Vol 27, No 10, 10/84 pg. 1013.
-
- Translated from ADA to C by Rick Richardson.
- Every method to preserve ADA-likeness has been used,
- at the expense of C-ness.
-
- Translated from C to Python by Guido van Rossum.
-
-Version History:
-
- Version 1.1 corrects two bugs in version 1.0:
-
- First, it leaked memory: in Proc1(), NextRecord ends
- up having a pointer to itself. I have corrected this
- by zapping NextRecord.PtrComp at the end of Proc1().
-
- Second, Proc3() used the operator != to compare a
- record to None. This is rather inefficient and not
- true to the intention of the original benchmark (where
- a pointer comparison to None is intended; the !=
- operator attempts to find a method __cmp__ to do value
- comparison of the record). Version 1.1 runs 5-10
- percent faster than version 1.0, so benchmark figures
- of different versions can't be compared directly.
-
- Version 1.2 changes the division to floor division.
-
- Under Python 3 version 1.1 would use the normal division
- operator, resulting in some of the operations mistakenly
- yielding floats. Version 1.2 instead uses floor division
- making the benchmark an integer benchmark again.
-
-"""
-
-LOOPS = 50000
-
-from time import time
-
-__version__ = "1.2"
-
-[Ident1, Ident2, Ident3, Ident4, Ident5] = range(1, 6)
-
-class Record:
-
- def __init__(self, PtrComp = None, Discr = 0, EnumComp = 0,
- IntComp = 0, StringComp = 0):
- self.PtrComp = PtrComp
- self.Discr = Discr
- self.EnumComp = EnumComp
- self.IntComp = IntComp
- self.StringComp = StringComp
-
- def copy(self):
- return Record(self.PtrComp, self.Discr, self.EnumComp,
- self.IntComp, self.StringComp)
-
-TRUE = 1
-FALSE = 0
-
-def main(loops=LOOPS):
- benchtime, stones = pystones(loops)
- print("Pystone(%s) time for %d passes = %g" % \
- (__version__, loops, benchtime))
- print("This machine benchmarks at %g pystones/second" % stones)
-
-
-def pystones(loops=LOOPS):
- return Proc0(loops)
-
-IntGlob = 0
-BoolGlob = FALSE
-Char1Glob = '\0'
-Char2Glob = '\0'
-Array1Glob = [0]*51
-Array2Glob = [x[:] for x in [Array1Glob]*51]
-PtrGlb = None
-PtrGlbNext = None
-
-def Proc0(loops=LOOPS):
- global IntGlob
- global BoolGlob
- global Char1Glob
- global Char2Glob
- global Array1Glob
- global Array2Glob
- global PtrGlb
- global PtrGlbNext
-
- starttime = time()
- for i in range(loops):
- pass
- nulltime = time() - starttime
-
- PtrGlbNext = Record()
- PtrGlb = Record()
- PtrGlb.PtrComp = PtrGlbNext
- PtrGlb.Discr = Ident1
- PtrGlb.EnumComp = Ident3
- PtrGlb.IntComp = 40
- PtrGlb.StringComp = "DHRYSTONE PROGRAM, SOME STRING"
- String1Loc = "DHRYSTONE PROGRAM, 1'ST STRING"
- Array2Glob[8][7] = 10
-
- starttime = time()
-
- for i in range(loops):
- Proc5()
- Proc4()
- IntLoc1 = 2
- IntLoc2 = 3
- String2Loc = "DHRYSTONE PROGRAM, 2'ND STRING"
- EnumLoc = Ident2
- BoolGlob = not Func2(String1Loc, String2Loc)
- while IntLoc1 < IntLoc2:
- IntLoc3 = 5 * IntLoc1 - IntLoc2
- IntLoc3 = Proc7(IntLoc1, IntLoc2)
- IntLoc1 = IntLoc1 + 1
- Proc8(Array1Glob, Array2Glob, IntLoc1, IntLoc3)
- PtrGlb = Proc1(PtrGlb)
- CharIndex = 'A'
- while CharIndex <= Char2Glob:
- if EnumLoc == Func1(CharIndex, 'C'):
- EnumLoc = Proc6(Ident1)
- CharIndex = chr(ord(CharIndex)+1)
- IntLoc3 = IntLoc2 * IntLoc1
- IntLoc2 = IntLoc3 // IntLoc1
- IntLoc2 = 7 * (IntLoc3 - IntLoc2) - IntLoc1
- IntLoc1 = Proc2(IntLoc1)
-
- benchtime = time() - starttime - nulltime
- if benchtime == 0.0:
- loopsPerBenchtime = 0.0
- else:
- loopsPerBenchtime = (loops / benchtime)
- return benchtime, loopsPerBenchtime
-
-def Proc1(PtrParIn):
- PtrParIn.PtrComp = NextRecord = PtrGlb.copy()
- PtrParIn.IntComp = 5
- NextRecord.IntComp = PtrParIn.IntComp
- NextRecord.PtrComp = PtrParIn.PtrComp
- NextRecord.PtrComp = Proc3(NextRecord.PtrComp)
- if NextRecord.Discr == Ident1:
- NextRecord.IntComp = 6
- NextRecord.EnumComp = Proc6(PtrParIn.EnumComp)
- NextRecord.PtrComp = PtrGlb.PtrComp
- NextRecord.IntComp = Proc7(NextRecord.IntComp, 10)
- else:
- PtrParIn = NextRecord.copy()
- NextRecord.PtrComp = None
- return PtrParIn
-
-def Proc2(IntParIO):
- IntLoc = IntParIO + 10
- while 1:
- if Char1Glob == 'A':
- IntLoc = IntLoc - 1
- IntParIO = IntLoc - IntGlob
- EnumLoc = Ident1
- if EnumLoc == Ident1:
- break
- return IntParIO
-
-def Proc3(PtrParOut):
- global IntGlob
-
- if PtrGlb is not None:
- PtrParOut = PtrGlb.PtrComp
- else:
- IntGlob = 100
- PtrGlb.IntComp = Proc7(10, IntGlob)
- return PtrParOut
-
-def Proc4():
- global Char2Glob
-
- BoolLoc = Char1Glob == 'A'
- BoolLoc = BoolLoc or BoolGlob
- Char2Glob = 'B'
-
-def Proc5():
- global Char1Glob
- global BoolGlob
-
- Char1Glob = 'A'
- BoolGlob = FALSE
-
-def Proc6(EnumParIn):
- EnumParOut = EnumParIn
- if not Func3(EnumParIn):
- EnumParOut = Ident4
- if EnumParIn == Ident1:
- EnumParOut = Ident1
- elif EnumParIn == Ident2:
- if IntGlob > 100:
- EnumParOut = Ident1
- else:
- EnumParOut = Ident4
- elif EnumParIn == Ident3:
- EnumParOut = Ident2
- elif EnumParIn == Ident4:
- pass
- elif EnumParIn == Ident5:
- EnumParOut = Ident3
- return EnumParOut
-
-def Proc7(IntParI1, IntParI2):
- IntLoc = IntParI1 + 2
- IntParOut = IntParI2 + IntLoc
- return IntParOut
-
-def Proc8(Array1Par, Array2Par, IntParI1, IntParI2):
- global IntGlob
-
- IntLoc = IntParI1 + 5
- Array1Par[IntLoc] = IntParI2
- Array1Par[IntLoc+1] = Array1Par[IntLoc]
- Array1Par[IntLoc+30] = IntLoc
- for IntIndex in range(IntLoc, IntLoc+2):
- Array2Par[IntLoc][IntIndex] = IntLoc
- Array2Par[IntLoc][IntLoc-1] = Array2Par[IntLoc][IntLoc-1] + 1
- Array2Par[IntLoc+20][IntLoc] = Array1Par[IntLoc]
- IntGlob = 5
-
-def Func1(CharPar1, CharPar2):
- CharLoc1 = CharPar1
- CharLoc2 = CharLoc1
- if CharLoc2 != CharPar2:
- return Ident1
- else:
- return Ident2
-
-def Func2(StrParI1, StrParI2):
- IntLoc = 1
- while IntLoc <= 1:
- if Func1(StrParI1[IntLoc], StrParI2[IntLoc+1]) == Ident1:
- CharLoc = 'A'
- IntLoc = IntLoc + 1
- if CharLoc >= 'W' and CharLoc <= 'Z':
- IntLoc = 7
- if CharLoc == 'X':
- return TRUE
- else:
- if StrParI1 > StrParI2:
- IntLoc = IntLoc + 7
- return TRUE
- else:
- return FALSE
-
-def Func3(EnumParIn):
- EnumLoc = EnumParIn
- if EnumLoc == Ident3: return TRUE
- return FALSE
-
-if __name__ == '__main__':
- import sys
- def error(msg):
- print(msg, end=' ', file=sys.stderr)
- print("usage: %s [number_of_loops]" % sys.argv[0], file=sys.stderr)
- sys.exit(100)
- nargs = len(sys.argv) - 1
- if nargs > 1:
- error("%d arguments are too many;" % nargs)
- elif nargs == 1:
- try: loops = int(sys.argv[1])
- except ValueError:
- error("Invalid argument %r;" % sys.argv[1])
- else:
- loops = LOOPS
- main(loops)
diff --git a/Misc/NEWS b/Misc/NEWS
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -16,10 +16,10 @@
Tools/Demos
-----------
-- Issue #15369: The pybench microbenchmark has been removed from Tools. Please
- use the new Python benchmark suite https://github.com/python/performance
- which is more reliable and includes a portable version of pybench working on
- Python 2 and Python 3.
+- Issue #15369: The pybench and pystone microbenchmark have been removed from
+ Tools. Please use the new Python benchmark suite
+ https://github.com/python/performance which is more reliable and includes a
+ portable version of pybench working on Python 2 and Python 3.
- Issue #28102: The zipfile module CLI now prints usage to stderr.
Patch by Stephen J. Turnbull.
--
Repository URL: https://hg.python.org/cpython
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