USAGE: benchmark [pid=] [vid=] [intf=] [ep=] [list]
[read|write|loop] [notestselect]
[verify|verifydetail]
[retry=] [timeout=] [refresh=] [priority=]
[mode=] [buffersize=] [buffercount=] [packetsize=]

Commands:
list : Display a list of connected devices before starting.
Select the device to use for the test from the list.
read : Read from the device.
write : Write to the device.
loop : [Default] Read and write to the device at the same time.

notestselect : Skips submitting the control transfers to get/set the
test type. This makes the application compatible
with non-benchmark firmwared. Use at your own risk!

verify : Verify received data for loop and read tests. Report
basic information on data validation errors.
verifydetail : Same as verify except reports detail information for
each byte that fails validation.

Switches:
vid : Vendor id of device. (hex) (Default=0x0666)
pid : Product id of device. (hex) (Default=0x0001)
retry : Number of times to retry a transfer that timeout.
(Default = 0)
timeout : Transfer timeout value. (milliseconds) (Default=5000)
The timeout value used for read/write operations. If a
transfer times out more than {retry} times, the test
fails and the operation is aborted.
mode : Sync|Async (Default=Sync)
Sync uses the libusb-win32 sync transfer functions.
Async uses the libusb-win32 asynchronous api.
buffersize : Transfer test size in bytes. (Default=4096)
Increasing this value will generally yield higher
transfer rates.
buffercount: (Async mode only) Number of outstanding transfers on
an endpoint (Default=1, Max=10). Increasing this value
will generally yield higher transfer rates.
refresh : The display refresh interval. (in milliseconds)
(Default=1000) This also effect the running status.
priority : AboveNormal|BelowNormal|Highest|Lowest|Normal
(Default=Normal) The thread priority level to use
for the test.
ep : The loopback endpoint to use. For example ep=0x01, would
read from 0x81 and write to 0x01. (default is to use the
(first read/write endpoint(s) in the interface)
intf : The interface id the read/write endpoints reside in.
packetsize : For isochronous use only. Sets the iso packet size.
If not specified, the endpoints maximum packet size
is used.
WARNING:
This program should only be used with USB devices which implement
one more more "Benchmark" interface(s). Using this application
with a USB device it was not designed for can result in permanent
damage to the device.

Examples:

benchmark vid=0x0666 pid=0x0001
benchmark vid=0x4D2 pid=0x162E
benchmark vid=0x4D2 pid=0x162E buffersize=65536
benchmark read vid=0x4D2 pid=0x162E
benchmark vid=0x4D2 pid=0x162E buffercount=3 buffersize=0x2000