USB3.0 throughput cannot be achieved on TX2


I ran a USB3.0 speed test on Jetson TX2 evaluation board using the following setup and command:

Jetson TX2 --------> SSD (WD BLUE 3D NAND SSD)

cat /dev/zero | pv > /media/nvidia/diskname/tmp123

The results showed average speed of ~200MiB/s
when running the same test on my PC or on Xavier NX developer kit I get better results: ~340MiB/s which seems like the limitation of the SSD card itself.

Question is: why in Jetson TX2 I see worse results then in Xavier NX and my PC?


  1. The SSD card has SATA connection so I used also a SATA-USB3.0 adapter
  2. I configured high power mode in Jetson TX2 and ran jetson_clocks script for highest performance
  3. I gave highest priority (-20) to the data transfer process, it helped stabilize the variance of the speed, but did not increase the average speed
  4. I used also other commands like: dd if=/dev/zero of=/dev/sda1 bs=1024 - same results
  5. Read transactions are also slower in Jetson TX2 compared to PC and Xavier NX, approximately by the same proportions.

Any help would be appreciated,

1 Like

Please execute sudo nvpmodel-m 0 and sudo jetson_clocks, and check again. It is max performance mode of TX2.


Thanks for your reply.
I’ve already done so as indicated in note number 2.


Hi kfir.twizer,

Please set max performance mode and using iozone3 tool to test read/write performance.
You can reference detail from here.