Goal of uvperf

USBdevice Vault perf 테스트 툴을 사용하여, host<->device의 Bulk In, Bulk Out, Isochronous In transfer들의 bandwidth. accuracy를 파악할 수 있다.

How to run uvperf

Install libusbK driver

1. Using Zadig-2.8.exe
2. If you can't see the deivce, check Option->List All Devices
3. Install libusbK(v3.1.0.0)

uvperf.c

1. gcc로 컴파일 할 경우 링크 경로 지정 -> -L"{libusbk.dll 경로}" -l"usb"
2. CMake, MinGW 사용, script 폴더의 uvperf_build, uvperf_exe 참조
3. Visual Studio로 컴파일 할 경우 -> #pragma comment(lib, "libusbk.lib") 추가

Usage of uvperf

CLI

uvperf -v VID -p PID -i INTERFACE -a AltInterface -e ENDPOINT -m TRANSFERMODE -T TIMER -t TIMEOUT -f FileIO -b BUFFERCOUNT -l READLENGTH -w WRITELENGTH -r REPEAT -S Example

• -v VID
  USB Vendor ID
• -p PID
  USB Product ID
• -i INTERFACE
  USB Interface
• -a AltInterface
  USB Alternate Interface
• -e ENDPOINT
  USB Endpoint
• -m TRANSFERMODE
  0 = Async, 1 = Sync
• -T TIMER
  Timer in seconds
• -t TIMEOUT
  USB Transfer Timeout
• -f FILEIO
  Use file I/O, default : FALSE
• -b BUFFERCOUNT
  Number of buffers to use
• -l READLENGTH
  Length of read transfers
• -w WRITELENGTH
  Length of write transfers
• -r REPEAT
  Number of transfers to perform
• -S
  Show transfer data, default : FALSE

uvperf -v 0x1004 -p 0xa000 -i 0 -a 0 -e 0x81 -m 0 -t 1000 -l 1024 -r 1000 -R

This will perform 1000 bulk transfers of 1024 bytes to endpoint 0x81 on interface 0, alternate setting 0 of a device with VID 0x1004 and PID 0xA000 The transfers will have a timeout of 1000ms.

List

uvperf -l | -w Buffersize

then, you can select device and endpoint ( recommend type with buffer size and timeout with commands )

Bandwitdh

In the middle of excution, press "q" or "Q" then, show the log average Bandwidth ( Mpbs ), and total transfer

Known Issue

1. Windows상에서만 test 가능
2. Multi transfer 미지원