Sean Reifschneider <[EMAIL PROTECTED]> writes:
> We're working at the sprint on tracking this down. I want to provide some
> history first and then what we're looking for feedback on.
>
> Steve Holden found this on Sunday, the pybench try/except test shows a ~60%
> slowdown from 2.4.3 to 2.5a2. The original test is, roughly:
>
> for i in range(N):
> try: raise ValueError, 'something'
> except: pass
>
> But changing it to the following shows 0% slowdown from 2.4.3 to 2.5a2:
>
> e = ValueError('something')
> for i in range(N):
> try: raise e
> except: pass
>
> The change is that from 2.4.3 to 2.5a2 includes Brett Cannon's patch to make
> exceptions all new-style objects.
Could it just be that instantiating instances of new-style classes is
slower than instantiating instances of old-style classes? There's not
anything in what you've posted to suggest that exceptions are involved
directly.
Cheers,
mwh
--
Get out your salt shakers folks, this one's going to take more
than one grain. -- Ator in an Ars Technica news item
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