Jetson Thor T4000 Shows Throttling During GPU + CPU Stress Test

Robotics & Edge Computing Jetson Systems Jetson Thor
1

Hi Team,

We observed that when running a GPU + CPU stress test on the Jetson Thor T4000 platform, the system reports a throttling message during the test.

However, under the same test conditions, the Jetson Thor T5000 does not show this issue.

We would like to understand:

  1. What could cause the throttling behavior on the T4000 platform?

  2. Is this related to thermal limitations, power limits, or firmware settings?

  3. Are there any recommended configurations or tuning methods to avoid throttling during high-load stress tests?

Test Condition:

  • GPU + CPU full loading stress test

  • Same software environment and stress methodology used on both T4000 and T5000

Any suggestions or debugging recommendations would be appreciated.

Thank you.

system throttled message
system throttled message1099×485 94.3 KB

Stress test Jetson Power GUI log data.zip (341.0 KB)

3

For any kind of throttling issue, I would suggest you should check which OC event did you hit first.

sudo su -c ‘grep “” /sys/class/hwmon/hwmon*/oc*’

T4000 has lower threshold than T5000. It is expected that it would be easier to see throttling on T4000.

You should not use maxN mode to test because MAXN mode is an experimental setting for adjusting clock settings and creating custom power profiles, we don’t recommend running heavy workloads for prolonged periods in this mode.

These are all listed in the document that your screenshot shows.