Le mercredi 29 mai 2019 à 16:55 -0400, Sven Van Asbroeck a écrit : > 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 Just for your information, I tested with this pipeline, with kernel "5.2.0-rc2-00024-gbec7550cca10": time gst-launch-1.0 filesrc location=~/Videos/jellyfish-10-mbps-hd- h264.mkv ! matroskademux ! h264parse ! v4l2h264dec ! fakevideosink sync=0 Définition du pipeline à PAUSED... Le pipeline est en phase de PREROLL… Le pipeline a terminé la phase PREROLL… Passage du pipeline à la phase PLAYING… New clock: GstSystemClock EOS reçu de l’élément « pipeline0 ». Execution ended after 0:00:12.860395248 Définition du pipeline à PAUSED... Définition du pipeline à READY (prêt)… Définition du pipeline à NULL… Libération du pipeline… real 0m13,411s user 0m1,398s sys 0m1,006s That's about 70fps. > > 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
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