[Python-Dev] Dynamic bytecode analysis

[M.-A. Lemburg]

damien morton wrote:
> Im not sure how I could properly excersise Zope, and Mailman doesn't run
> under windows. PySol is do-able. Any other suggestions as to apps worthy
> of profiling?

Anything with more than 10kloc Python code should do, I guess.

> Would the python standard library unit tests qualify?

Nope :-)

>>-----Original Message-----
>>From: M.-A. Lemburg [mailto:mal@lemburg.com] 
>>Sent: Thursday, 27 February 2003 03:41
>>To: Damien Morton
>>Cc: python-dev@python.org
>>Subject: Re: [Python-Dev] Dynamic bytecode analysis
>>
>>
>>Damien Morton wrote:
>>
>>>So I enhanced the PVM dynamic execution profiler to keep track of 
>>>quads of instructions rather than just pairs. Running it on 
>>
>>PyStone, I 
>>
>>>get the following results:
>>
>>pystone is *not* your typical Python application. If you want 
>>some interesting data, I'd suggest to use applications like 
>>Zope, PySol, Mailman, etc. as basis.
>>
>>The easiest way to do this is by instrumenting the Python 
>>interpreter used by all these applications and have it write 
>>its data to a pickle every now and then. Here's an example 
>>from the Python 1.5 days:
>>
>>Opcode frequencies:
>>--------------------------------------------------------------
>>----------
>>           SET_LINENO(127) :      12036 
>>================================
>>            LOAD_FAST(124) :      10366 ===========================
>>            LOAD_ATTR(105) :       4565 ============
>>           LOAD_CONST(100) :       4549 ============
>>              POP_TOP(  1) :       3756 =========
>>           STORE_FAST(125) :       3580 =========
>>        CALL_FUNCTION(131) :       2558 ======
>>        JUMP_IF_FALSE(111) :       2142 =====
>>          LOAD_GLOBAL(116) :       2056 =====
>>           COMPARE_OP(106) :       2001 =====
>>         RETURN_VALUE( 83) :       1593 ====
>>             FOR_LOOP(114) :       1363 ===
>>           BINARY_ADD( 23) :       1133 ===
>>           STORE_NAME( 90) :       1062 ==
>>        JUMP_ABSOLUTE(113) :        835 ==
>>        MAKE_FUNCTION(132) :        753 ==
>>           SETUP_LOOP(120) :        568 =
>>            POP_BLOCK( 87) :        536 =
>>         JUMP_FORWARD(110) :        503 =
>>                   32( 32) :        442 =
>>         JUMP_IF_TRUE(112) :        438 =
>>            LOAD_NAME(101) :        425 =
>>              DUP_TOP(  4) :        421 =
>>       UNARY_NEGATIVE( 11) :        411 =
>>         SETUP_EXCEPT(121) :        410 =
>>                   31( 31) :        409 =
>>
>>-- 
>>Marc-Andre Lemburg
>>eGenix.com
>>
>>Professional Python Software directly from the Source  (#1, 
>>Feb 27 2003)
>> >>> Python/Zope Products & Consulting ...         
>>http://www.egenix.com/
>> >>> mxODBC, mxDateTime, mxTextTools 
>>...        http://python.egenix.com/
>>______________________________________________________________
>>__________
>>Python UK 2003, Oxford:                                     
>>33 days left
>>EuroPython 2003, Charleroi, Belgium:                       
>>117 days left
>>
>>
> 
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-- 
Marc-Andre Lemburg
eGenix.com

Professional Python Software directly from the Source  (#1, Feb 27 2003)
 >>> Python/Zope Products & Consulting ...         http://www.egenix.com/
 >>> mxODBC, mxDateTime, mxTextTools ...        http://python.egenix.com/
________________________________________________________________________
Python UK 2003, Oxford:                                     33 days left
EuroPython 2003, Charleroi, Belgium:                       117 days left