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

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?

Could you also runt the jetson_clocks& to verify?


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)

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


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)

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


The resolution is 3840x2160, the frame rate is 30 fps, the command is as follow:
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

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

OK, I will add this command and try again.

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
root@jetson:/sys/class/thermal/thermal_zone0# cat trip_point_7_{type,temp}
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}

Ok, I will try it.

This topic was automatically closed 14 days after the last reply. New replies are no longer allowed.