[Discuss-gnuradio] measuring latency between USB packets in kernel to user space

[George Nychis]

Hi all,

I was wondering if anyone has measured the latency between the GNU Radio 
USB packets from kernel to user space.

A UCLA paper eluded to it being around 200us on their system, noting 
that it was the minimum latency they measured to get the data from user 
space to the USB driver for all sampling rates.  It's not an exact 
measurement, but rather an upper bound.

If not, I'll try tossing some timestamps on the data and compare the two.

- George