"gregjohn" <pte### [at] yahoocom> wrote:
> "Tim Attwood" <tim### [at] comcastnet> wrote:
> > I've suspected before that some things are being
> > fast disk loaded from memory, but I'm unsure if
> > pov is actually the memory manager for that.
> > It might be windows doing it behind the scenes.
> >
> > Is the linux version the same way?
>
>
> I put some files which demonstrate the bug (or my SDL poor construction) in
> povray.text.scene-files.

I experienced the same problem a while back on one of my animations though
not as severe as yours.  Mine only slowed down by a factor of about five.
I took your scene and ran it on two machines.  The first is a 2.4Ghz
Pentium 4 with 512M running linux.  The other is an AMD X2 +5000 with 2G
running Windows Media Edition.  I tested both 3.6 and the latest 3.7 beta.
All times are in seconds.
To make it as simple as possible I only ran two frames, 10 and 11.

                      Linux-Pentium            Windows-AMD
Command               3.6       3.7           3.6       3.7

+kff20 +sf10 +ef10    <1        <1            0.39      0.69
+kff20 +sf11 +ef11    <1        <1            0.30      0.61
+kff20 +sf10 +ef11    48        1.19         25.63      1.20

On the 2 frame animation the first frame was less than 1 sec on both
machines.
I don't have any idea what caused the slowdown, but it seems to be resolved
in 3.7

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