One thing you could try is dowloading the HotSpot JVM
(http://www.javasoft.com/products/hotspot/index.html) and use the command
line option -Xincgc to enable the incremental garbage collector. This should
lead to much shorter pauses for GC, to the extent that they may not be
noticeable at all.
Cheers,
Pete
--
Pete Cockerell
California, USA
----- Original Message -----
From: Tonny Espeset <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Wednesday, June 16, 1999 9:21 AM
Subject: Performance
> I need to create an interactive animation with smooth playback in Java 2D.
> The performance of Java 2D seems quite good in general, so I can easily
use
> this API to achieve the framerate I need.
>
> But my concern is that playback is jerky. The computer halts quite often
> when showing the animation. Even the simplest animation, say of a small
> ball moving across the screen, will not move smoothly. It will move
> smoothly for a second or two, then jerk, then move smoothly again. I have
> tried many approaches to get rid of this jerky movement, but failed. The
> problem seems to be deeply buried in the JVM itself, and I suspect what is
> going on is very frequent garbage collection of garbage created by the JVM
> itself. I have noticed this same behavior in all Java 2D related examples,
> also the examples from Sun. My old Java applets also suffer the same
> problem when running in a Java 2 environment, even though they ran
smoothly
> in previous Java environments.
>
> I recognize Java 2D as a powerful API for multimedia production, but if it
> does not allow smooth playback the usefulness is drastically lowered. I
> hope I do not need to return to a previous Java version to solve the
problem.
>
> Does anyone have any experience or thoughts about this?
>
> Regards,
>
> - Tonny Espeset
>
>
> Plutonium Software
> http://www.plutoniumsoftware.com
>
