Hi,

We're currently upgrading the bsp of our board (based off a SabreSD at 1.2Ghz) from Daisy to Jethro using kernel 3.10.53 and stumbled upon a performance issue within weston with fbdev-backend (or at least that's what it looks like).

Running weston-simple-egl easily shows the performance difference between my two setups:

On Daisy (weston 1.6): solid 60 fps
On Jethro (weston 1.8, imx-gpu-viv-5.0.11.p7.4): 35.56 fps

I'm using the same parameters on both setups (FB_MULTI_BUFFER=2, --use-gl=1). Setting the FB_MULTI_BUFFER=1 will give a slight performance increase (39.0 fps), but still nowhere near where we were on Daisy. Also, I've tried updating to Weston 1.9, as well as imx-gpu-viv-5.0.11.p8.3, but get the same results.

Is there anything obvious I could be missing?

Another detail is that the bsp was originally based off the Freescale bsp release, but we have since moved to the community release during our update to Jethro.

Thanks!

Dominique Bureau