Hi!
On Wed, Jul 22, 2009 at 11:19:36AM -0400, Stef Telford wrote:
> Hello Oleg, Everyone,
> Sorry for the delay in replying.. "real life" sort of got in the way.
> Deepest apologies for that.
No problem. I understand the issue and feel your pain, sure.
> When I benchmarked the SQLObject page of 7000+ objects (give or take
> a few hundred), I got the 80-90 seconds. With plain python objects, I
> got the 0.3 seconds (obviously a lot less going on, so, not surprising
> there). However, when I took out the evals inside sqlobject/main.py, I
> got the page speed to around 15-20 seconds.
Aha, that's the results! Thank you!
In what way have you "took out the evals"? You cannot just remove them so
you probably replaced them? with what?
> So, this raises the question, is it perhaps better to -not- use
> eval(..) and instead tinker with the objects __attributes__ or __dict__
> ? I am not -that- conversant/knowledgeable in pythons black magic of
> object meta programming but.. I definitely think that if we can get away
> from calling 'evals' when doing object instantiation that would be a
> HUGE performance win.
That requires some thinking and experimenting. Perhaps those evals
could be replaced with functools.partial - that requires python 2.5, so it
can be implemented after SQLObject 0.11 (which I'm gonna release RSN).
> And, in the process of putting my money where my mouth is, I am more
> than willing to donate $200 bounty for the fix, either to the person or
> charity of their choosing.
Wow, what a generous offer! Thank you very much!
> (ps. I -do- have a large PNG of the system during a single 'page
> impression'. It's about 7mb .. I can send it offlist if your interested
> ?)
A PNG of the system? What's that? I don't understand...
Oleg.
--
Oleg Broytmann http://phd.pp.ru/ [email protected]
Programmers don't die, they just GOSUB without RETURN.
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