USB3.0 throughput cannot be achieved on TX2

Robotics & Edge Computing Jetson & Embedded Systems Jetson TX2
1

Hi,

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?

Notes:

  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,
Thanks,
Kfir

1 Like
3

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

4

Hi,

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

Thanks,
Kfir

5

Hi kfir.twizer,

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