Philipp and Fabio, On Wed, May 29, 2019 at 12:53 PM Fabio Estevam <festevam@xxxxxxxxx> wrote: > > Does this patch from Philipp fix the problem? > https://git.pengutronix.de/cgit/pza/linux/commit/?h=imx-drm/fixes&id=137caa702f2308f7ef03876e164b0d0f3300712a I am now running 5.2-rc2 with Philipp's non-plus imx6q patch. Performance is still much worse than the Freescale baseline. I am not at all worried about vpu scaler performance, after all v8 is an in-progress patch. I am much more concerned about the CODA h264 slowdown. My 1080p30 test video runs at half the speed compared to the Freescale kernel. The best it can do is 28fps, which results in visible 'jerks' in the video. Note that this is without using the scaler. Questions: - is the performance slowdown a known issue? - is there anything I've missed in the gstreamer pipelines below? - is there anything I can do to help? A) mainline 5.2-rc2 with Philipp's latest non-plus patch: $ time gst-launch-1.0 filesrc location=/home/default/jellyfish-10-mbps-hd-h264.mkv ! matroskademux ! h264parse ! v4l2h264dec ! kmssink can-scale=0 sync=0 real 0m 32.01s B) Freescale kernel: $ time gst-launch-0.10 filesrc location=/home/default/jellyfish-10-mbps-hd-h264.mkv ! decodebin ! mfw_v4lsink sync=0 Running time 0:00:14.781129554 render fps 59.941
