speeding up Python script

[Tomasz Rola]

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On Wed, 18 May 2005, Luis P. Mendes wrote:

> Hi,
> 
> I have a 1000 line python script that takes many hours to finish.  It is
> running with six inside 'for' loops.
> 
> I've searched the net for ways to speed up the proccess.
> 
> Psyco improves performance around 3% in this case which is not good enough.
> 
> How can I dramatically improve speed?
> 
> I tried to find some tool that converts Python to C automatically but
> couldn't.  As I don't know C, I think that weave and PyInline for
> example are out of the solution.
> 
> I'm using Linux.

Maybe this will help you, since you didn't tell what is your python
version, I've seen 2-2.5x speed increase by just replacing 2.1 with psyco
by 2.3 with psyco.

=>  (1003 3): cat bzz2_* | /usr/bin/time python2.3 somescript.py '2.ada miala mak.ba' | wc -c
psyco.full start
psyco.full end
7.48user 0.03system 0:07.58elapsed 99%CPU (0avgtext+0avgdata
0maxresident)k
0inputs+0outputs (436major+358minor)pagefaults 0swaps
1064960

=>  (1003 4): cat bzz2_* | /usr/bin/time somescript.py '2.ada miala mak.ba' | wc -c
psyco.full start
psyco.full end
18.27user 0.03system 0:19.00elapsed 96%CPU (0avgtext+0avgdata
0maxresident)k
0inputs+0outputs (357major+183minor)pagefaults 0swaps
1064960

Regards,
Tomasz Rola

- --
** A C programmer asked whether computer had Buddha's nature.      **
** As the answer, master did "rm -rif" on the programmer's home    **
** directory. And then the C programmer became enlightened...      **
**                                                                 **
** Tomasz Rola          mailto:tomasz_rola at bigfoot.com             **


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