I used the agx orin 64G core module and installed the system on an SSD. I have applied the RT real-time kernel patch. I would like to ask, why is the maximum value of the real-time scheduling performance of my system not below 90us? [11de6cef9d570afb7bc91eb7efa40423] [22663f0c6ad44034b7b47abe9e5…

No ARM Cortex-A architecture is capable of hard real time. You have to get ARM Cortex-M or Cortex-R. For anything beyond simple situations you’d need Cortex-R. Consider why a simple microcontroller (Cortex-M) handles only a few processes. The time it takes to schedule and context switch itself goes…

Before posting the message, I referred to this link. Before the “stress --cpu 12 --io 12 --vm 12” command was executed. My maximum delay is also around 1000 milliseconds. After implementation, there was indeed a significant improvement. As shown in the above picture, the maximum delay was around 2…

I can’t answer, but are you trying to get that latency reduction for a specific program? Or is this just from the stress testing program? Also, do you have swap space enabled? If swap is enabled, then I would expect extra latency for any process using that at the time it context switches to another …

I’m currently only in the testing phase and not yet in the actual usage process. Our clients have requested that our real-time performance be within 90 microseconds. I would like to know why, after applying this patch that adds a real-time kernel, the real-time performance does not fall within this …

The real-time kernel schedulability has not reached below 90us

Robotics & Edge Computing Jetson Systems Jetson AGX Orin

DaneLLL August 21, 2025, 12:46am 5

Hi,
You can compare performance between non-RT kernel and RT kernel:
Jetson orin AGX PREEMPT-RT RT-test - #3 by DaneLLL

It may not be below 90us but performance is supposed to be different.

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The real-time kernel schedulability has not reached below 90us

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