I am experiencing an issue with my NVMe SSD performance on the Jetson Orin platform.
Using the lspci command, I confirmed that the SSD is connected via a PCIe C4 controller, which supports PCIe Gen4 x4.
However, hardware signal integrity (SI) testing shows that the SSD is only running at PCIe Gen1 speed, significantly limiting its performance.
Details:Platform: Jetson Orin
SSD Interface: PCIe Gen4 x4
Detection via lspci: Shows Gen4 x4 capabilityActual
Performance: SI testing indicates Gen1 speed
Questions:Why is my NVMe SSD running at PCIe Gen1 speed when it is detected as PCIe Gen4 x4?Are there any known firmware or software configurations that could be causing this issue?How can I debug or force the SSD to run at its expected PCIe Gen4 x4 speed?Any insights or suggestions would be greatly appreciated.
What is the result of sudo lspci -vvv here?
Yes, that is in gen4 speed. I don’t know how your SI testing tell you that it is gen1 thing.
Maybe you should clarify that first.