iMX6Q graphics performance

[David Hill]

On 1/28/15, 3:44 PM, Mike wrote:
> What is your Favorite Embedded board if you got something right now? Odroid U3? or something else. I guess
> the Odroid U3 is availabe in Early Feb again at 179.00 US.
> http://www.hardkernel.com/main/products/prdt_info.php?g_code=G140448267127

My current favorite is the BoundaryDevices - partly because they do an awesome job of building a distro with the drivers I needed.

There are only a small number of boards that provide a distro with the required accelerated drivers, and very few of those support direct to framebuffer rendering.

The U3 is a snazzy board at a great price, and you can get accelerated rendering in X11. Our focus was to take X11 out of the loop for resource and other considerations - rendering direct to the framebuffer. But... I never did get an accelerated direct to framebuffer working for the U3 (and the Mali GPU). The ARM guys say it can be done, but it needs to be part of the platform port.

OpenJFX can work with the X11 on the U3, but there are places, particularly with the touch and key support where the fit and finish is not very good. It was good enough for Jasper to demo though :-)

Dave
>
> On Wed, Jan 28, 2015 at 11:56 AM, Jasper Potts <jasper.potts at oracle.com <mailto:jasper.potts at oracle.com>> wrote:
>
>     We were getting good performance with 1080p for JavaOne keynote Car demo last year. Though not as good as Odroid U3
>
>     Jasper
>
>     Sent from my iPhone
>
>     > On Jan 28, 2015, at 8:47 AM, David Hill <David.Hill at oracle.com <mailto:David.Hill at oracle.com>> wrote:
>     >
>     >> On 1/28/15, 2:09 AM, Prasant Jalan wrote:
>     >> Few more questions about your Boundary Devices iMX6 Quad:
>     >> - Amount of RAM/memory in your iMX6 system?
>     >> - iMX6 Single Core Clock speed (0.8 GHz, 1 GHz or 1.2 GHz)
>     >> - Which javaFX version did you use to get the above measurements (if you recollect)?
>     >
>     > I am using: http://boundarydevices.com/product/sabre-lite-imx6-sbc/
>     >
>     > Specs are on the page. It is a Quad, so 4 cores @ 1GHz, 1GB memory.
>     >
>     > OS is a Ubuntu base distro, provided by BoundaryDevices, though I have a similar setup using Yocto that I have not been able to see any FX differences.
>     >
>     > ubuntu at oracle:~$ cat /proc/cpuinfo
>     > processor    : 0
>     > model name    : ARMv7 Processor rev 10 (v7l)
>     > BogoMIPS    : 790.52
>     >
>     > My monitor is connected with HDMI, 720P. Note that 1080p will likely be slower - more data to move even with a GPU.
>     >
>     > Using JDK 8u6 + OpenJFX build (which is my development setup). There are some improvements that are present in OpenJFX that are not in 8u6, and that certainly might affect performance. The process to build OpenJFX is here. <https://wiki.openjdk.java.net/display/OpenJFX/Building+OpenJFX>
>     >
>     > For a simple JFX command, it is unlikely that we will require more than 2 CPU cores. One thread for the application, and another for the repainter. A more complex application with worker thread might light up more cores.
>     >
>     > Using the top command (then hitting "1" to enable the Core usage display), I see my Industrial app using one to two cores like this:
>     >
>     > %Cpu0  : 22.4 us,  2.0 sy,  0.0 ni, 75.5 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
>     > %Cpu1  :  0.0 us,  0.0 sy,  0.0 ni,100.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
>     > %Cpu2  :  0.3 us,  0.3 sy,  0.0 ni, 99.3 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
>     > %Cpu3  : 66.8 us,  4.3 sy,  0.0 ni, 28.9 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
>     >
>     > Occasionally just one core like this, probably when we are computing a change in the Scene.
>     >
>     > %Cpu0  :  8.0 us,  1.3 sy,  0.0 ni, 90.6 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
>     > %Cpu1  :  0.0 us,  0.0 sy,  0.0 ni,100.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
>     > %Cpu2  : 83.8 us,  2.6 sy,  0.0 ni, 13.5 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
>     > %Cpu3  :  0.7 us,  0.0 sy,  0.0 ni, 99.3 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
>     >
>     > and of course occasionally 3 cores - I expect that is when top is running :-)
>     >
>     > Dave
>     >
>     >
>     > --
>     > David Hill<David.Hill at Oracle.com>
>     > Java Embedded Development
>     >
>     > "A man's feet should be planted in his country, but his eyes should survey the world."
>     > -- George Santayana (1863 - 1952)
>     >
>
>


-- 
David Hill<David.Hill at Oracle.com>
Java Embedded Development

"A man's feet should be planted in his country, but his eyes should survey the world."
-- George Santayana (1863 - 1952)