i.MX ProcessorsのトピックRe: About imx6 GPU performance difference between LTIB and Yocto

About imx6 GPU performance difference between LTIB and Yocto

宗標廖 — Mon, 08 Jun 2015 00:49:29 GMT

Hello,Community

I tested the GPU performance of iMX6 with the following apps in /opt/viv_samples/vdk.

And the result is as bellow.

My question is:

According to the results,the GPU performace in LTIB is better than that in Yocto.Why is it?

Re: About imx6 GPU performance difference between LTIB and Yocto

igorpadykov — Mon, 08 Jun 2015 04:30:16 GMT

Hi 宗標廖

regarding yocto please use latest L3.14.28_1.0.0_iMX6QDLS_BUNDLE

it has Vivante 5.0.11.p4.5 libraries while L3.10.17_1.0.2 used 4.6.9p13

IMX6L31428101RN i.MX 6 Yocto Project L3.14.28_1.0.1 Patch Release Notes -Release Notes

Best regards

igor

-----------------------------------------------------------------------------------------------------------------------

Note: If this post answers your question, please click the Correct Answer button. Thank you!

-----------------------------------------------------------------------------------------------------------------------

Re: About imx6 GPU performance difference between LTIB and Yocto

宗標廖 — Mon, 08 Jun 2015 09:54:20 GMT

Hi igor

I tried the 3.14.28_1.0.0,the results are almost the same as 3.10.17_1.0.2.

I want to know how to get a better performance when using Yocto BSP.

Best Regards,

ZongbiaoLiao

Re: About imx6 GPU performance difference between LTIB and Yocto

宗標廖 — Tue, 09 Jun 2015 08:38:17 GMT

igorpadykov

I need your help.

Thank you!

Re: About imx6 GPU performance difference between LTIB and Yocto

igorpadykov — Tue, 09 Jun 2015 09:26:16 GMT

you can check discussion on meta-fsl-arm mailing list

https://www.mail-archive.com/meta-freescale@yoctoproject.org/msg12902.html

~igor

Re: About imx6 GPU performance difference between LTIB and Yocto

宗標廖 — Wed, 10 Jun 2015 02:57:07 GMT

Hi ,igor

I compared source code in <linux>/drivers/mxc/gpu-viv between L3.10.17_1.0.2 and L3.0.35_4.1.0,

they are very different.

I want to know whether is it the reason or not?

Thank you!

Re: About imx6 GPU performance difference between LTIB and Yocto

igorpadykov — Wed, 10 Jun 2015 04:54:00 GMT

one can look at

Re: enable profiling for gpu driver P13 and kernel 3.0.35

Re: GPU Profiling with Vivante VDK Tools

~igor

Re: About imx6 GPU performance difference between LTIB and Yocto

宗標廖 — Fri, 26 Jun 2015 06:03:21 GMT

Hi igor

any other advice??

I am now confused by this issue.

Thank you!