OpenGL Accelerated HTML Overlay: Performance - Xilinx UltraScale
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| OpenGL Accelerated HTML Overlay |
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Xilinx Ultrascale
This wiki intents to provide performance measurements for the Xilinx Ultrascale.
GStreamer plugin performance
The plugin was tested with an example overlay and an glvideomixer for the overlaying stage, using an Xilinx UltraScale+ with Pentalinux. The measurements were taken with the following pipeline:
Pipeline (htmloverlay + glvideomixer):
export NUM_VIDEO_BUFFERS=570 gst-launch-1.0 -e \ glvideomixer name=mix background=black start-time-selection=first \ sink_0::zorder=0 sink_1::zorder=1 sink_1::alpha=1.0 sink_1::xpos=0 sink_1::ypos=0 ! \ 'video/x-raw(memory:GLMemory),format=RGBA,width=1280,height=720,framerate=30/1' ! \ gldownload ! queue ! videoconvert ! \ omxh264enc target-bitrate=4000000 control-rate=variable ! h264parse ! mp4mux faststart=true ! filesink location=out.mp4 \ videotestsrc pattern=smpte is-live=true do-timestamp=true num-buffers="$NUM_VIDEO_BUFFERS" ! \ 'video/x-raw,format=RGBA,width=1280,height=720,framerate=30/1' ! \ glupload ! queue ! mix.sink_0 \ videotestsrc pattern=black is-live=true do-timestamp=true num-buffers="$NUM_VIDEO_BUFFERS" ! \ 'video/x-raw,height=1080,width=1920,framerate=30/1,format=RGBA' ! \ queue ! htmloverlay url="http://0.0.0.0:8000/ridgerun_overlay.html" enable-js=true web-refresh-rate=5 ! \ queue ! videoconvert ! 'video/x-raw,format=RGBA' ! glupload ! queue ! mix.sink_1
CPU Usage
The gst-shark tool was used to measure CPU utilization. This tracer records the CPU load during the execution of a given pipeline.
Measured FPS
As seen on the graphic the average CPU is around 55%.
Frame rate is on average 13FPS.
Processing time of the htmloverlay element.
Processing time measures how long each pipeline element takes per buffer, helping identify components that increase overall latency.
Performance summary.
| i.MX8MP with HTML refresh at 5 Hz | |||
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| Resolution | 720p | 1080p | 4K |
| System Memory (htmloverlay) | |||
| Maximum Framerate (fps) |
13 | - | - |
| CPU Consumption (%) | 55 | - | - |
| RAM Consumption (MiB) | - | - | - |
Used overlay
The user overlay (click View Source on the wiki to see the html):