[meta-freescale] imx6q gpu performance lower than expected

[Nikita Yushchenko]

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.