usb_dev_bulk is a utility for measuring the performance of USB bulk transfers to and from any USB device. It was originally written to test the performance of libopencm3 drivers for the USB stack.

• -c | --copyright: -- print license and exit
• -d | --device -- device to test, in the form VID:PID (i.e. c03e:b007)
• -e | --endpoint -- endpoint to use for bulk transfers
• -I | --IN -- use IN transfers (default)
• -O | --OUT -- use OUT transfers
• -s | --sync -- run transfers synchronously (default)
• -a | --async -- run transfers asynchronously
• -q | --queue-depth -- number of simultaneous transfers to issue in async mode
• -t | --transfer-size -- length of each transfer

Asynchronous EP2IN, with 1024 byte transfers and a queue depth of 32

$ usb_bulk_bench -d c03e:b007 -e 2 -I -a -t 1024 -q 32

Synchronous EP2IN, with 1024 byte transfers

$ usb_bulk_bench -d c03e:b007 -e 3 -I -s -t 1024

• gcc or any working compiler
• cmake
• libusb

1. Create a build directory and cd into it:

$ mkdir build; cd build

1. Now tell cmake to crate the build system, pointing it to the source directory:

$ cmake ..

1. Compile:

& make

1. Profit