PCIE DMA rate is slow

Autonomous Machines Jetson & Embedded Systems Jetson AGX Orin
1

hi nv
Two orin modules connected using PCIE, we tested EP DMA performance
RC->EP The maximum DMA read speed is only 15Gbps
How to improve DMA read rate?

3

Hi,
The throughput looks fine. What is the target in the use-cases? Do you connect in x4 or x8

And please upgrade to latest Jetpack 5.1.1 if you are using previous version.

4

hi nv
PCIE x8
It tested on jetpack5.1
We want the speed is above 30Gbps

5

Hi youganghu,
you need optimize your DMA driver to improve DMA speed.

7

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