capturing slow

[jothiadithya]

I have system with tpg. The frame capture is very  slow. what could be the issue

root@plnx:~# yavta -c3 -n3 -s 1920x1080 -f RGB24 -Ft1.raw /dev/video0
Device /dev/video0 opened.
Device `vcap_tp0 output 0' on `platform:vcap_tp0:0' is a video output (without mplanes) device.
Video format set: RGB24 (33424752) 1920x1080 field none, 1 planes:
* Stride 5760, buffer size 6220800
Video format: RGB24 (33424752) 1920x1080 field none, 1 planes:
* Stride 5760, buffer size 6220800
3 buffers requested.
length: 1 offset: 3202890280 timestamp type/source:[ 409.804971] xilinx-vtc 43c20000.v_tc: Failed to set clk rate: 4767200, actual rate: 71500000
mono/EoF
Buffer 0/0 mapped at address 0xb68aa000.
length: 1 offset: 3202890280 timestamp type/source: mono/EoF
Buffer 1/0 mapped at address 0xb62bb000.
length: 1 offset: 3202890280 timestamp type/source: mono/EoF
Buffer 2/0 mapped at address 0xb5ccc000.
0 (0) [-] none 0 0 B 444.411880 444.411929 0.029 fps ts mono/EoF
1 (1) [-] none 1 0 B 461.747151 461.747196 0.058 fps ts mono/EoF
2 (2) [-] none 2 0 B 479.082424 479.082472 0.058 fps ts mono/EoF
Captured 3 frames in 69.341153 seconds (0.043264 fps, 0.000000 B/s).
3 buffers released.

[florentw]

Hi @jothiadithya 

This could be a hint:

xilinx-vtc 43c20000.v_tc: Failed to set clk rate: 4767200, actual rate: 71500000

Do you have a programable clock? You would need to investigate why you get this message.

Also, are you sure you have enough bandwidth to access the memory?

[watari]

Hi @jothiadithya 

What kind of storage do you use ?

Is it an enough performance to record this streaming ?

Best regards,

[aoifem]

Hi @jothiadithya 

If your question is answered or your issue is solved, please kindly mark the response which helped as a solution (click on "Accept as solution" button below the reply).

If this is not solved/answered, please reply in the topic giving more information on your current status.

Thanks and Regards,

[jothiadithya]

SD card

[florentw]

Hi @jothiadithya 

Do you really need help here?

There was 4 questions and you just replied to 1 really quickly

[jothiadithya]

thanks for the response.

1. I do not really know how to measure the band width.

2. I haven't any idea why Vtc shows error. 

i do really need solution

[florentw]

Hi @jothiadithya 

Can you share what your HW looks like?

[jothiadithya]

Hi,

I am using Zynq 7020 

tpg -> frmbuf-wr -> ddr 

I can post the block diagram tomorrow since I left for the day

[watari · Accepted solution]

Hi @jothiadithya 

Would you try to change storage from SD card to ram disk (ex. /tmp) or faster storage to investigate route cause ?

Best regards,

[jothiadithya]

Yes. That was the issue. Thanks