Frame drop when cpu temperature raise to about 70 ℃ in orin

[261136636]

Hi, nvidia teams:
on our board, when camera preview, we find frame will drop sometimes if cpu temperature raise to about 70 ℃ , if reduce its temperature With the fan blowing, the frame-drop will disappear，the log is as show in the picture, so what’s the reason and how to fix it?

[ShaneCCC]

Could you also runt the jetson_clocks& to verify?

Thanks

[261136636]

Hi，ShaneCCC:
Thanks for your reply. We use “jetson_clocks&”, but frame-drop is still occurs. The log is in the attachment.
cameratrace11(1).txt (645.2 KB)
dmesg.txt (4.1 KB)

[ShaneCCC]

Could you check if below message when temperature low than 70 ℃

CHANSEL_SHORT_FRAME
CHANSEL_NOMATCH

[261136636]

There is not “CHANSEL_SHORT_FRAME"and"CHANSEL_NOMATCH” exist in log when temperature low than 70 ℃. the attachment is another log.
cameratrace5(1).txt (566.2 KB)

[ShaneCCC]

Could you give the reproduce command and step. And what’s the sensor resolution and frame rate.

Thanks

[261136636]

The resolution is 3840x2160, the frame rate is 30 fps, the command is as follow:
jetson_clocks&
echo 1 > /sys/kernel/debug/bpmp/debug/clk/vi/mrq_rate_locked
echo 1 > /sys/kernel/debug/bpmp/debug/clk/isp/mrq_rate_locked
echo 1 > /sys/kernel/debug/bpmp/debug/clk/nvcsi/mrq_rate_locked
cat /sys/kernel/debug/bpmp/debug/clk/vi/max_rate |tee /sys/kernel/debug/bpmp/debug/clk/vi/rate
cat /sys/kernel/debug/bpmp/debug/clk/isp/max_rate | tee /sys/kernel/debug/bpmp/debug/clk/isp/rate
cat /sys/kernel/debug/bpmp/debug/clk/nvcsi/max_rate | tee /sys/kernel/debug/bpmp/debug/clk/nvcsi/rate
echo 1 > /sys/kernel/debug/tracing/trace
cat /sys/kernel/debug/tracing/trace

gst-launch-1.0 v4l2src device=/dev/video0 ! ‘video/x-raw, format=UYVY, width=3840, height=2160, framerate=30/1’ ! xvimagesink -ev

[ShaneCCC]

Can you run “sudo tegrastats” to monitor the CPU usage?

[261136636]

OK, I will add this command and try again.

[ShaneCCC]

Could you modify cpu-hot-surface like below to clarify.

modify cpu-hot-surface limit from 70000mC to 85000mC.

root@jetson:/sys/class/thermal/thermal_zone0# cat type
CPU-therm
root@jetson:/sys/class/thermal/thermal_zone0# cat trip_point_7_{type,temp}
active
70000
root@jetson:/sys/class/thermal/thermal_zone0# echo 85000 > trip_point_7_temp
root@jetson:/sys/class/thermal/thermal_zone0# cat trip_point_7_{type,temp}
active
85000

[261136636]

Ok, I will try it.