[Python-Dev] Dynamic bytecode analysis

[damien morton]

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?

Would the python standard library unit tests qualify?


> -----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)
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