Speed quirk: redundant line gives six-fold speedup

[Bill Mill]

On 8/25/05, Erik Max Francis <max at alcyone.com> wrote:
> Mark Dickinson wrote:
> 
> > Questions:
> >
> > (1) Can anyone else reproduce this behaviour, or is it just some quirk
> >     of my setup?
> > (2) Any possible explanations?  Is there some optimization that kicks
> >     in at a certain number of lines, or at a certain length of
> >     bytecode?
> > (3) If (2), is there some way to force the optimization, so that I can
> >     get the speed increase without having to add the extra lines?
> 
> I see no difference in execution times, as expected.  The most likely
> explanation is simply that other things were going on on your system
> when you ran the first test, but not the second test, resulting in the
> discrepancy.  In other words, the speed change had nothing to do with
> your dummy lines.
> 

Unlikely; 2 people have confirmed these results already.

I did find, though, that if I remove all print statements from the
program, the dummy and non-dummy variable versions take indentical
time. Can others reproduce this?

I'm Investigating further...

Peace
Bill Mill
bill.mill at gmail.com