I completed the installation of the real-time patch according to the tutorial on the website(https://docs.nvidia.com/jetson/l4t/#page/Tegra%20Linux%20Driver%20Package%20Development%20Guide/kernel_custom.html#wwpID0EYHA), but I tested the real-time performance with cyclitest and found that the real-time performance is still very poor. I wonder if there are other ways to improve the real-time performance.
Before installing the real-time kernel patch：
After installing the real-time kernel patch
Could you run sudo tegrastats and check if you can see the deviation?
Also, please share more details about the BSP release used, any steps followed before your test like jetson_clocks.sh etc, cyclictest command used with args and result.
Please run the test after setting the below values and share the results. Hoping it to help with latencies.
-# cat /sys/kernel/debug/tegra_mce/rt_window_us
-# cat /sys/kernel/debug/tegra_mce/rt_fwd_progress_us
-# echo 0x7f > /sys/kernel/debug/tegra_mce/rt_safe_mask
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