Re: [Pytables-users] Indexed & .createIndex() runtime

[kevin l. <lke...@ya...>]

Hi Francesc,

--- Francesc Altet <fa...@ca...> wrote:

> A Dijous 13 Gener 2005 21:42, kevin lester va
> escriure:
> > Success :-)
> 
> Glad to hear that
> 
> > If PATH == PYTHONPATH, then yes, I do have
> > zlib.dll(along with the others) in the
> /WINDOWS/SYSTEM
> > folder with the PATH pointing to it.
> 
> No, PYTHONPATH should not point to the zlib.dll
> directory. Just make sure
> that the zlib.dll is in a directory listed in your
> PATH environment
> variable. That should be enough.

I have the PATH environment variable pointing to
SYSTEM32, yet I still recieve this message.
> 
> > >>> Running 'C:\H5\klester.py' ...
> > C:\Python24\lib\site-packages\tables\Leaf.py:90:
> > UserWarning: zlib compression library is not
> > available. Using zlib instead!.
> >   warnings.warn( \
> > Time for standard query--> 0.0620000362396
> > Time for inkernel query--> 0.0469999313354
> > Time for indexed query--> 0.0160000324249
> 
> Ooops, you are getting a factor 3 for speed-up
> compared with inkernel and a
> factor of 4 against standard. That's quite a lot. In
> my laptop (Pentium 4 @
> 2 GHz, python 2.3.4), I'm getting the next figures:
> 
> $ python klester.py
> Time for standard query--> 0.147189855576
> Time for inkernel query--> 0.0714249610901
> Time for indexed query--> 0.0375471115112
> 
> where the speed-up is clearly inferior. Just out of
> curiosity, which
> processor, speed, and python version are you using?
> 
I have noticed differences for each; and not one is
always better than the other. I don't have the time
(just now) to run tests to provide to you, but will
happpily do so a little later this week.

Kevin

> Cheers,
> 
> -- 
> >OO<   Francesc Altet    ||  http://www.carabos.com/
> V  V   Carabos Coop. V.  ||  Who is your data daddy?
> PyTables
>  ""
> 
> 



		
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