Re: [Discuss-gnuradio] usrp_benchmark_usb.py failed max speed

[Thomas Tsou]

On Tue, Jun 22, 2010 at 11:15 AM,  <address@hidden> wrote:
> Hello everyone,
>
> When I run usrp_benchmark_usb.py, the two fastest tests fail, leaving me
> with 8 MB/sec maximum. I have two questions:
>
> First, how do I get the 16MB and 32MB tests to pass? Do I need a faster CPU?

Perhaps. What type of system are you running on? Restrictions on the
USB bus may also cause issues.

> Second, supposing I can't get a faster system, what is the consequence of
> having a slower maximum speed? Just a smaller bandwidth during
> transmitting and receiving?

usrp_benchmark_usb.py is not particularly reliable as a benchmark per
se. But, in general, if your system can't keep up with the usrp then
you'll lose packets. Reducing the bandwidth is one way to prevent that
from happening.

  Thomas