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PROCESSOR-SDK-AM62X: Gstreamer performance difference b/w SDK8 and SDK9

Ryuuichi machida
Guru 11820 points
Part Number: PROCESSOR-SDK-AM62X

Tool/software:

Hi,

My customer asked me that gstreamer performace difference between SDK 8 and SDK9.
Here is detailed information about SDK8 and SDK9.

1. SDK 8_06_00_42
2. SDK 9_02_01_10

When they performed following command, the total time of SDK9 was worse than SDK8.
Is it expected result ?

$ gst-launch-1.0 v4l2src device=/dev/video0 ! video/x-raw, width=4192, height=3120, format=UYVY ! multifilesink location=/dev/shm/gst%d.uyvy max-files=8

Best Regards, 

  • 0
    TI__Mastermind 19960 points

    Hi Machida-San,

    On AM62x we don’t have any HW accelerator for video processing. 
    when you say performance is worse compared to SDK 8.0. Is ther performance in terms of DDR BW/Framerate/CPU loading?

    Can you share the performance metrics on SDK 8.0 and 9.0 so we can better support your query?

    Best Regards,

    Suren

  • 0 in reply to Suren Porwar
    Guru 11820 points

    Hello,

    Thank you for your reply.
    >when you say performance is worse compared to SDK 8.0. Is ther performance in terms of DDR BW/Framerate/CPU loading?
    This is from viewpoint of pipeline processing time.

    >Can you share the performance metrics on SDK 8.0 and 9.0 so we can better support your query?
    Here is what I received from customer.

    Case SDK8 : Approx 300ms / 1 image
    Case SDK9 : Approx 700ms / 1 image

    BR,

  • 0 in reply to Ryuuichi machida
    TI__Mastermind 19960 points

    Hi Machida-san,

    Please share the pipeline so we can replicate the setup and share the performance.

    Best Regards,

    Suren

  • 0 in reply to Suren Porwar
    Guru 11820 points

    Hi,

    Here is pipeline information.

    $ gst-launch-1.0 v4l2src device=/dev/video0 ! video/x-raw, width=4192, height=3120, format=UYVY ! multifilesink location=/dev/shm/gst%d.uyvy max-files=8

    They perform just "input image from camera" and "save multiple image to memory".

    Best Regards,

  • 0 in reply to Ryuuichi machida
    TI__Mastermind 19960 points

    Hi Machida-san,

    I am on travel, so expect a response by end of this week when I will be able to run these tests on the AM62x board and validate and confirm.

    Apologies for the delay. 

    Best Regards,

    Suren

  • 0 in reply to Suren Porwar
    Guru 11820 points

    Hello,

    I have chance to check pipeline operation time from src to sink by using TI EVM.
    Here is one of my result using gst_tracer.

    0:00:00.715088250 [333m 1040[00m 0x77a64a0 [37mTRACE [00m [00;34m GST_TRACER :0::[00m latency, src-element-id=(string)0x782c1d0, src-element=(string)v4l2src0, src=(string)src, sink-element-id=(string)0x7830400, sink-element=(string)multifilesink0, sink=(string)sink, time=(guint64)110950, ts=(guint64)715035120;

    I got totally approx 50 result, however all result within 200 us.
    Here is command which I used.

    root@am62xx-evm:~# GST_TRACERS="latency" GST_DEBUG=GST_TRACER:7 GST_DEBUG_FILE="/opt/latency.txt" gst-launch-1.0 v4l2src device=/dev/video0 ! video/x-raw, width=1920, height=1080, format=UYVY ! multifilesink location=/dev/shm/gst%d.uyvy max-files=8

    Since I do not have CSI camera which accept 4K image, so I used 2K image. The difference is just this point.
    It seems that customer's result is too long though I have image size difference.

    I will ask how they measure latency, but if you have any comment about my result could you please let me know ?

    BR,