Re: [meta-freescale] imx6q gpu performance lower than expected
2015-03-23 17:10 GMT+03:00 Nikita Yushchenko nyushche...@dev.rtsoft.ru: Following up myself. We have tested master + qt 5.3.2 and master + qt 5.4.1 combinations, with LVDS 1280x800 screen and eglfs backend. Overall results are: dizzy, qt 5.3.2, imx6s = 22 fps [this is poor hw, included just for reference] dizzy, qt 5.3.2, imx6q = 37 fps master, qt 5.3.2, imx6q = 49 fps master, qt 5.4.1, imx6q = 59 fps Thus memory bandwidth is *not* the limiting factor on original setup. You can't assume that without finding the culprit (read below). Memory usage might have been optimized, knowing Vivante, they can leave various bugs for years. Pure software update resulted into significant fps improvement. Don't forget that when you change bracnhes, you also checkout meta-qt5 master branch, which might have latest things from qt5 developers, like GLES3 support or bugfixes pulled from original qt5 repos. Many thanks to Heikki Sarkanen for information that master branch shows better graphics performance. Any info about at what exact point it did happen and what was the problem? Relying on master is not a good way to go, master/master-next can be broken, so you can't use that in your production all the time. dizzy uses imx_3.10.17_1.0.0_ga as it seems https://github.com/Freescale/meta-fsl-arm/blob/dizzy/recipes-kernel/linux/linux-imx_3.10.17.bb#L14 Vivante commits are there http://git.freescale.com/git/cgit.cgi/imx/linux-2.6-imx.git/log/drivers/mxc/gpu-viv?h=imx_3.10.17_1.0.0_ga While master uses imx_3.10.53_1.1.0_ga https://github.com/Freescale/meta-fsl-arm/blob/master/recipes-kernel/linux/linux-imx_3.10.53.bb#L13 Vivante at http://git.freescale.com/git/cgit.cgi/imx/linux-2.6-imx.git/log/drivers/mxc/gpu-viv?h=imx_3.10.53_1.1.0_ga Best Regards, Dmitriy Beykun -- ___ meta-freescale mailing list meta-freescale@yoctoproject.org https://lists.yoctoproject.org/listinfo/meta-freescale
Re: [meta-freescale] imx6q gpu performance lower than expected
Following up myself. We have tested master + qt 5.3.2 and master + qt 5.4.1 combinations, with LVDS 1280x800 screen and eglfs backend. Overall results are: dizzy, qt 5.3.2, imx6s = 22 fps [this is poor hw, included just for reference] dizzy, qt 5.3.2, imx6q = 37 fps master, qt 5.3.2, imx6q = 49 fps master, qt 5.4.1, imx6q = 59 fps Thus memory bandwidth is *not* the limiting factor on original setup. Pure software update resulted into significant fps improvement. Many thanks to Heikki Sarkanen for information that master branch shows better graphics performance. Hi I've built freescale community bsp dizzy for a custom imx6q based board, and now I'm experimenting with GPU performance under Qt5. I have both xcb and eglfs backends running (under different builds). However performance is lower than was expected: on LVDS 1280x800, Qt5_CinematicExperience shows about 35-37 FPS, both under X11 and under eglfs. If using smaller window under X11, FPS increases, if using 1920x1080 it goes down to 20. This is much smaller than people get [1]. [1] https://community.freescale.com/thread/305066 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? TIA, Nikita Yushchenko -- ___ meta-freescale mailing list meta-freescale@yoctoproject.org https://lists.yoctoproject.org/listinfo/meta-freescale
Re: [meta-freescale] imx6q gpu performance lower than expected
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 nyushche...@dev.rtsoft.ru: 17.03.2015 21:20, Otavio Salvador пишет: On Tue, Mar 17, 2015 at 2:56 PM, Dmitriy B. rzk...@gmail.com wrote: 2015-03-17 17:08 GMT+03:00 Nikita Yushchenko nyushche...@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. -- ___ meta-freescale mailing list meta-freescale@yoctoproject.org https://lists.yoctoproject.org/listinfo/meta-freescale -- ___ meta-freescale mailing list meta-freescale@yoctoproject.org https://lists.yoctoproject.org/listinfo/meta-freescale
Re: [meta-freescale] imx6q gpu performance lower than expected
On Tue, Mar 17, 2015 at 11:08 AM, Nikita Yushchenko nyushche...@dev.rtsoft.ru wrote: However performance is lower than was expected: on LVDS 1280x800, Qt5_CinematicExperience shows about 35-37 FPS, both under X11 and under eglfs. If using smaller window under X11, FPS increases, if using 1920x1080 it goes down to 20. It might be related to several things, including memory. -- Otavio Salvador O.S. Systems http://www.ossystems.com.brhttp://code.ossystems.com.br Mobile: +55 (53) 9981-7854Mobile: +1 (347) 903-9750 -- ___ meta-freescale mailing list meta-freescale@yoctoproject.org https://lists.yoctoproject.org/listinfo/meta-freescale
Re: [meta-freescale] imx6q gpu performance lower than expected
On Tue, Mar 17, 2015 at 2:56 PM, Dmitriy B. rzk...@gmail.com wrote: 2015-03-17 17:08 GMT+03:00 Nikita Yushchenko nyushche...@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. -- Otavio Salvador O.S. Systems http://www.ossystems.com.brhttp://code.ossystems.com.br Mobile: +55 (53) 9981-7854Mobile: +1 (347) 903-9750 -- ___ meta-freescale mailing list meta-freescale@yoctoproject.org https://lists.yoctoproject.org/listinfo/meta-freescale
Re: [meta-freescale] imx6q gpu performance lower than expected
2015-03-17 17:08 GMT+03:00 Nikita Yushchenko nyushche...@dev.rtsoft.ru: Hi I've built freescale community bsp dizzy for a custom imx6q based board, and now I'm experimenting with GPU performance under Qt5. I have both xcb and eglfs backends running (under different builds). However performance is lower than was expected: on LVDS 1280x800, Qt5_CinematicExperience shows about 35-37 FPS, both under X11 and under eglfs. If using smaller window under X11, FPS increases, if using 1920x1080 it goes down to 20. This is much smaller than people get [1]. [1] https://community.freescale.com/thread/305066 Please, read the original post on the forum, it says that resolution of that demo is 1024x768 https://community.freescale.com/thread/305066#336263 You trying to run 1920x1080, what did you expect? As Otavio suggests, this might be connected to memory, calculate the memory bandwidth needed for drawing your app under X.org and I bet you'll hit the limit. 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. TIA, Nikita Yushchenko -- ___ meta-freescale mailing list meta-freescale@yoctoproject.org https://lists.yoctoproject.org/listinfo/meta-freescale Best Regards, Dmitriy Beykun -- ___ meta-freescale mailing list meta-freescale@yoctoproject.org https://lists.yoctoproject.org/listinfo/meta-freescale
[meta-freescale] imx6q gpu performance lower than expected
Hi I've built freescale community bsp dizzy for a custom imx6q based board, and now I'm experimenting with GPU performance under Qt5. I have both xcb and eglfs backends running (under different builds). However performance is lower than was expected: on LVDS 1280x800, Qt5_CinematicExperience shows about 35-37 FPS, both under X11 and under eglfs. If using smaller window under X11, FPS increases, if using 1920x1080 it goes down to 20. This is much smaller than people get [1]. [1] https://community.freescale.com/thread/305066 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? TIA, Nikita Yushchenko -- ___ meta-freescale mailing list meta-freescale@yoctoproject.org https://lists.yoctoproject.org/listinfo/meta-freescale
