[meta-freescale] imx6q gpu performance lower than expected

[eien sakebe]

Dears,
Got constant 60fps on Sabre For smart devices using (all graphical effects
activated) using eglfs and screen resolution of 1024x768

2015-03-17 20:59 GMT+01:00 Nikita Yushchenko <nyushchenko at dev.rtsoft.ru>:

> 17.03.2015 21:20, Otavio Salvador пишет:
> > On Tue, Mar 17, 2015 at 2:56 PM, Dmitriy B. <rzk333 at gmail.com> wrote:
> >> 2015-03-17 17:08 GMT+03:00 Nikita Yushchenko <nyushchenko at dev.rtsoft.ru
> >:
> > ...
> >>> CPU in both cases (x11 and egl) is almost unloaded (30% of one core
> >>> under eglfs, 30+30 under X11) so looks like speed limiting comes from
> GPU.
> >>>
> >>> What could be reason for this?  Any hints?
> >>
> >> Hint: Vivante X11 GPU drivers use DRI1(one, the 1998 one) and need a asm
> >> patch to libdrm to work. Guess what happens when you drag 90s
> technology to
> >> latest X.org on an embedded device.
> >
> > EGLFS is the best choice here.
>
> As I've written in the original mail, eglfs shows about the same fps as
> xcb does. Maybe several percent better (i.e. 37 vs 35) but that does not
> look serious.
>
> What FPS do other boards imx6 show under dizzy?
> Interested if this is our setup problem or generic hardware limitation.
>
> --
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