App on Linux - really slow... any ideas why?

[viktoras d.]

PC Acer TravelMate 2300,  Celeron 1.5 GHz, upgraded to 2 Gb RAM. I 
tested my app (AALite sqlite database browser) on a few distributions 
and found that it is completely usable on  Ubuntu 8.10 Intrepid Ibex 
(Gnome), but starts and then crashes Puppy; starts, works but finally 
crashes on Slax (KDE), both are Slackware based.  Did not notice any 
large speed loss on Ubuntu or any other Linux distribution though... All 
these tests were done with operating systems loaded completely into RAM 
from liveCDs. I also removed all the options that I do not need at the 
moment when compiling (no printing, no fonts, no table) Going to do more 
testing on other Linux distros...

As far as I remember previously applications compiled with RR 2.6 used 
to work on Puppy without any problems.

Viktoras

Ken Ray wrote:
> I've got a basic PC (Dell Dimension 4600 running a P4 at 2.66GHz with 2GB
> RAM) that switch boots between Windows XP and Ubuntu 8.04.  I have a pretty
> complex app (my stick figure animaton program "Stykz") that loads about 8
> libraries has  a few front and back scripts and when it opens it displays a
> main window and 4 floating palettes.
>
> The app is built with the Rev 3.5 engine and when I launch it on Windows, it
> takes about 5 seconds from initial launch to idle. When I do this on Ubuntu
> it is agonizingly slow, taking 25-30 seconds to come to an idle state. And
> after this, everything is like molasses - windows take seconds! to redraw,
> mouse messages aren't recognized immediately, etc.
>
> I haven't done much on Linux except StackRunner, which was very lightweight,
> but my overall question is: are there any "gotchas" I should know about
> related to Linux that might account for significantly affecting performance?
>
> TIA,
>
> Ken Ray
> Sons of Thunder Software, Inc.
> Email: kray at sonsothunder.com
> Web Site: http://www.sonsothunder.com/
>
>
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