Antoine Pitrou wrote:
> Hi,
>
> Victor Stinner <victor.stinner <at> haypocalc.com> writes:
>> Summary (minimum total) on 32 bits CPU:
>> * Python 2.6.1: 8762 ms
>> * Python 3.0.1: 8977 ms
>> * Python 3.1a1: 9228 ms (slower than 3.0)
>
> Have you compiled with or without "--with-computed-gotos"?
Why is the feature still disabled by default?
Christian
PS: Holy moly! Computed gotos totally put my Python on fire! The feature
increases the minimum run-time by approx. 25% and the average run-time
by approx. 40% on my Ubuntu 8.10 box (AMD64, Intel(R) Core(TM)2 CPU
T7600 @ 2.33GHz).
-------------------------------------------------------------------------------
PYBENCH 2.1
-------------------------------------------------------------------------------
* using CPython 3.1a0 (py3k:70205, Mar 8 2009, 15:16:23) [GCC 4.3.2]
* disabled garbage collection
* system check interval set to maximum: 2147483647
* using timer: time.time
-------------------------------------------------------------------------------
Benchmark: no_goto.pybench
-------------------------------------------------------------------------------
Rounds: 10
Warp: 10
Timer: time.time
Machine Details:
Platform ID: Linux-2.6.27-11-generic-x86_64-with-debian-lenny-sid
Processor:
Python:
Implementation: CPython
Executable: /home/heimes/dev/python/py3k/python
Version: 3.1.0
Compiler: GCC 4.3.2
Bits: 64bit
Build: Mar 8 2009 15:11:16 (#py3k:70205)
Unicode: UCS2
-------------------------------------------------------------------------------
Comparing with: goto.pybench
-------------------------------------------------------------------------------
Rounds: 10
Warp: 10
Timer: time.time
Machine Details:
Platform ID: Linux-2.6.27-11-generic-x86_64-with-debian-lenny-sid
Processor:
Python:
Implementation: CPython
Executable: /home/heimes/dev/python/py3k/python
Version: 3.1.0
Compiler: GCC 4.3.2
Bits: 64bit
Build: Mar 8 2009 15:16:23 (#py3k:70205)
Unicode: UCS2
Test minimum run-time average run-time
this other diff this other diff
-------------------------------------------------------------------------------
BuiltinFunctionCalls: 90ms 68ms +31.2% 109ms 75ms +44.8%
BuiltinMethodLookup: 56ms 46ms +21.4% 75ms 50ms +48.9%
CompareFloats: 100ms 61ms +64.8% 116ms 65ms +77.8%
CompareFloatsIntegers: 139ms 97ms +43.3% 169ms 103ms +64.0%
CompareIntegers: 151ms 88ms +72.7% 187ms 96ms +94.2%
CompareInternedStrings: 117ms 66ms +78.9% 136ms 69ms +95.8%
CompareLongs: 87ms 50ms +75.5% 102ms 53ms +93.1%
CompareStrings: 102ms 53ms +94.0% 124ms 63ms +97.8%
ComplexPythonFunctionCalls: 97ms 83ms +17.4% 113ms 85ms +32.9%
ConcatStrings: 128ms 116ms +10.3% 151ms 117ms +28.6%
CreateInstances: 90ms 81ms +10.0% 108ms 83ms +30.1%
CreateNewInstances: 67ms 61ms +9.6% 84ms 63ms +32.7%
CreateStringsWithConcat: 128ms 108ms +18.3% 150ms 110ms +35.6%
DictCreation: 71ms 54ms +30.4% 87ms 61ms +43.3%
DictWithFloatKeys: 83ms 67ms +24.1% 104ms 69ms +51.5%
DictWithIntegerKeys: 80ms 60ms +32.9% 108ms 67ms +61.6%
DictWithStringKeys: 109ms 50ms +117.0% 111ms 59ms +88.1%
ForLoops: 70ms 59ms +18.4% 95ms 63ms +51.2%
IfThenElse: 96ms 68ms +40.7% 115ms 69ms +66.8%
ListSlicing: 78ms 77ms +1.5% 83ms 80ms +2.8%
NestedForLoops: 92ms 71ms +29.2% 124ms 76ms +62.7%
NestedListComprehensions: 98ms 76ms +28.6% 118ms 86ms +36.1%
NormalClassAttribute: 152ms 139ms +9.2% 183ms 140ms +30.6%
NormalInstanceAttribute: 96ms 76ms +27.2% 128ms 82ms +56.9%
PythonFunctionCalls: 87ms 70ms +23.9% 100ms 71ms +39.9%
PythonMethodCalls: 108ms 87ms +23.9% 126ms 91ms +38.9%
Recursion: 135ms 113ms +20.0% 166ms 117ms +42.6%
SecondImport: 84ms 82ms +3.0% 97ms 86ms +12.9%
SecondPackageImport: 90ms 89ms +1.2% 102ms 91ms +12.0%
SecondSubmoduleImport: 120ms 119ms +0.7% 130ms 120ms +8.4%
SimpleComplexArithmetic: 68ms 57ms +18.3% 84ms 58ms +44.6%
SimpleDictManipulation: 136ms 111ms +22.2% 162ms 115ms +41.2%
SimpleFloatArithmetic: 83ms 53ms +56.7% 102ms 66ms +54.6%
SimpleIntFloatArithmetic: 96ms 72ms +32.8% 119ms 79ms +51.0%
SimpleIntegerArithmetic: 96ms 73ms +31.4% 121ms 73ms +65.5%
SimpleListComprehensions: 82ms 68ms +20.6% 106ms 70ms +50.9%
SimpleListManipulation: 77ms 52ms +47.7% 101ms 66ms +52.9%
SimpleLongArithmetic: 66ms 55ms +19.8% 74ms 57ms +30.7%
SmallLists: 101ms 81ms +25.8% 125ms 82ms +51.9%
SmallTuples: 109ms 80ms +35.9% 137ms 86ms +59.5%
SpecialClassAttribute: 252ms 249ms +1.2% 302ms 252ms +19.8%
SpecialInstanceAttribute: 94ms 76ms +24.4% 117ms 86ms +35.4%
StringMappings: 212ms 206ms +2.6% 220ms 213ms +3.6%
StringPredicates: 90ms 79ms +14.6% 123ms 83ms +48.5%
StringSlicing: 162ms 128ms +25.8% 175ms 138ms +27.4%
TryExcept: 87ms 39ms +122.7% 108ms 47ms +128.0%
TryFinally: 63ms 59ms +6.8% 80ms 68ms +17.9%
TryRaiseExcept: 34ms 30ms +15.7% 47ms 30ms +57.5%
TupleSlicing: 120ms 116ms +3.3% 133ms 118ms +12.2%
WithFinally: 91ms 83ms +9.9% 123ms 91ms +34.8%
WithRaiseExcept: 95ms 85ms +11.1% 114ms 86ms +32.0%
-------------------------------------------------------------------------------
Totals: 5212ms 4185ms +24.5% 6274ms 4426ms +41.8%
(this=no_goto.pybench, other=goto.pybench)
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