Re: Poor performances on Linux Ubuntu unless desktop effects are disabled
Posted by Sven Gothel on Jul 28, 2014; 11:29pm
URL: https://forum.jogamp.org/Poor-performances-on-Linux-Ubuntu-unless-desktop-effects-are-disabled-tp4032647p4032669.html
On 07/28/2014 11:14 PM, riccaricca68 [via jogamp] wrote:
> Hi Julien,
>
> I've tested the suggested JOGL example and it behaves exactly like the Java3D
> applications:
>
> Ubuntu 3D session, VSYNC ON ==> BAD behavior, flickering, vibrating borders.
> Ubuntu 3D session, VSYNC OFF ==> Quite good, it is not perfectly smooth
> probably because the frame rate is not constant while the rotation angle
> increments are fixed.
> LXDE session, VSYNC ON ==> GOOD, very smooth!May I add my favorite configuration ?
GNU/Linux (Debian 8.0 / Jessie)
w/ KDE and enabled or disabled GL composite WM: All Great!
As Julien mentioned, this is not a JOGL issue at all.
Bad performance here is due to poor composite WM implementation
and/or a not so fast GPU. The latter should no more be an issue today though.
~Sven
URL: https://forum.jogamp.org/Poor-performances-on-Linux-Ubuntu-unless-desktop-effects-are-disabled-tp4032647p4032669.html
On 07/28/2014 11:14 PM, riccaricca68 [via jogamp] wrote:
> Hi Julien,
>
> I've tested the suggested JOGL example and it behaves exactly like the Java3D
> applications:
>
> Ubuntu 3D session, VSYNC ON ==> BAD behavior, flickering, vibrating borders.
> Ubuntu 3D session, VSYNC OFF ==> Quite good, it is not perfectly smooth
> probably because the frame rate is not constant while the rotation angle
> increments are fixed.
> LXDE session, VSYNC ON ==> GOOD, very smooth!
GNU/Linux (Debian 8.0 / Jessie)
w/ KDE and enabled or disabled GL composite WM: All Great!
As Julien mentioned, this is not a JOGL issue at all.
Bad performance here is due to poor composite WM implementation
and/or a not so fast GPU. The latter should no more be an issue today though.
~Sven
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