There is a large gap for usb3.0 speed between Window7 and TX2 Ubuntu

We test 2 devices:

Device1: usb3.0 USB flash disk
usb3.0 USB flash disk ----> TX2 speed:70MB/s
usb3.0 USB flash disk ----> Window7 speed:120MB/s

Device2: usb3.0 android (MTP)
MTP ----> TX2 speed:37MB/s
MTP ----> Window7 speed:80MB/s

Why is the speed gap so wide?

Hi baocai.jia,

What’s tool are you test read/write speed?
Before testing, please run below command first:

sudo ./jetson_clocks.sh

You can try to use IOZone benchmark tool and post topic link for you reference:
https://devtalk.nvidia.com/default/topic/1025223/jetson-tx2/tx2-usb-3-0-speed-test/post/5215123/#5215123

Device: Verbatim 32G usb3.0
Command line used: iozone -a -n 1g -g 2g -i 0 -i 1 -f /media/jia/VERBATIM/2.mp4 -Rb /home/jia/iozone.xls

1: Test PC ubuntu usb3.0

iozone test complete.
Excel output is below:

“Writer report”
“4” “8” “16” “32” “64” “128” “256” “512” “1024” “2048” “4096” “8192” “16384”
“1048576” 0 0 0 0 959512 849455 831308 909046 841352 867362 860434 837011 840913
“2097152” 0 0 0 0 32050 30055 33780 33258 33372 32995 32873 32048 32706

“Re-writer report”
“4” “8” “16” “32” “64” “128” “256” “512” “1024” “2048” “4096” “8192” “16384”
“1048576” 0 0 0 0 1759290 1805644 1781096 1762418 1577069 1498095 1401673 1629134 1626367
“2097152” 0 0 0 0 31078 30109 32313 31945 32397 31572 31633 32104 31670

“Reader report”
“4” “8” “16” “32” “64” “128” “256” “512” “1024” “2048” “4096” “8192” “16384”
“1048576” 0 0 0 0 4587243 4904222 4905184 3833846 4111258 3491669 3324823 3438822 3099774
“2097152” 0 0 0 0 4511157 4555649 4740398 4255041 4146077 3618780 3290346 4486212 2398505

“Re-Reader report”
“4” “8” “16” “32” “64” “128” “256” “512” “1024” “2048” “4096” “8192” “16384”
“1048576” 0 0 0 0 4262330 4981433 4604147 4326023 4026170 3560456 2988272 3304017 3411856
“2097152” 0 0 0 0 4539249 4922488 4743755 4576505 4152703 3763833 3298939 4688794 2955150

2: Test TX2 usb3.0 (do not run “sudo ./jetson_clocks.sh”)

iozone test complete.
Excel output is below:

“Writer report”
“4” “8” “16” “32” “64” “128” “256” “512” “1024” “2048” “4096” “8192” “16384”
“1048576” 0 0 0 0 23271 20751 21675 24753 23310 24171 24086 24155 23995
“2097152” 0 0 0 0 24421 24783 24540 24085 37600 35870 41031 40739 39271

“Re-writer report”
“4” “8” “16” “32” “64” “128” “256” “512” “1024” “2048” “4096” “8192” “16384”
“1048576” 0 0 0 0 1129747 1091400 1028202 953011 890813 969929 979717 981829 969573
“2097152” 0 0 0 0 40364 41192 37040 38311 37790 34080 39826 39853 40392

“Reader report”
“4” “8” “16” “32” “64” “128” “256” “512” “1024” “2048” “4096” “8192” “16384”
“1048576” 0 0 0 0 2866544 2925583 2929170 2825206 2712392 2633745 2573394 2594823 2676140
“2097152” 0 0 0 0 2885316 2981754 2944644 2800676 2764918 2690367 2635033 2654508 2699214

“Re-Reader report”
“4” “8” “16” “32” “64” “128” “256” “512” “1024” “2048” “4096” “8192” “16384”
“1048576” 0 0 0 0 3143826 3170412 3140398 3051522 2920695 2800699 2738498 2757000 2723948
“2097152” 0 0 0 0 3029038 3153906 3093070 2995802 2876597 2724985 2736046 2703386 2736899

Hi baocai.jia,

Below is our internal test result on R28.1/TX2:

USB_3.0-IOZone-Random Read (512K)(MBps▲)       290.59
USB_3.0-IOZone-Random Write (512K)(MBps▲)      269.25
USB_3.0-IOZone-Sequential Read (512K)(MBps▲)   255.83
USB_3.0-IOZone-Sequential Write (512K)(MBps▲)  261.85

ok, ThX, I will check it.
The present result is in line with my request.