Ekkehard Kraemer wrote:
>
> Hi,
>
> I have an application that draws a lot of java.awt.Images onto another image,
> and then draws the latter one onto the screen (the application does no other
> relevant things). It is written for JDK 1.1.x, and runs very smooth under
> Blackdown 1.1.7v3 or IBM 1.1.8. Is it normal that the same application runs
> *much* slower (5-15 times) on Blackdown JDK 1.2.2rc3 or Inprise JDK 1.2.2rc1?
> Is this a known problem with all 1.2 JDKs, or are the Linux ports of the
> native Java2D parts not yet optimised for speed (which would be excusable,
> since speed should be the last thing to optimize...)?
JDK1.2 moved a lot of graphics functionality from the native window
system into its own Java code, and performance has suffered
significantly in some areas.
Nathan
>
> I'm sure that I'm using a JIT since if I add -Djava.compiler=NONE, it runs
> several factors slower. I've also tried to vary -green or -native, with no
> large effect.
>
> MbG, Ekkehard
>
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