[XML-SIG] Python XML Profiling
dkgunter at lbl.gov
Wed Oct 26 22:08:37 CEST 2005
Have you considered using the Python profiler? A co-worker of mine gave
a presentation about it that might help you get started.
>I'm trying to profile a Python XML program, but
>getting confused because of the results. It basically
>traverses an XML file. The gprof profiling results are
>% Time Self Seconds Calls Name
>34.8 0.63 _moncount
> 10.5 0.19 mcount
> 10.5 0.19 20,427 _PyEval_EvalFrame
> 3.9 0.07 275,249 _lookdict_string
> 0.0 0.00 11,753 __PyString_Eq
>As I understand, _moncount and mcount are related with
>gprof and _PyEval_EvalFrame is the main interpreter
>loop. It seems this simple program spends a lot of
>time in the interpreter loop. I thought a program
>which handles XML would spend a lot of time on string
>processing, i.e. string matching. In this case, it
>spends just a little time on _lookdict_string, which
>does not even do string matching. However, the string
>matching function (__PyString_Eq) takes negligible
>time. How could this be possible? How does it achieve
>XML processing without exact string matching?
>Thank you for your help!
>Yahoo! FareChase: Search multiple travel sites in one click.
>XML-SIG maillist - XML-SIG at python.org
More information about the XML-SIG