Re: [Discuss-gnuradio] USRP2 latency calculations

[George Nychis]

> set_freq would not be a good measure, since it takes a while to
> configure the daughterboard.  find() isn't great either, since it
> waits 10ms to ensure that it's gathered all responses to it's
> broadcast.
>
> set_rx_decim should give a reasonable measurement, as long as you're
> not streaming data.
>
>   

BTW, I also have code which can be run which actually measures the 
latency on USRP1, rather than just theoretical calculations that you've 
found on the wiki:
https://www.cgran.org/wiki/ArchitectureLatencyMeasurements

It uses pings and some modifications to the Linux kernel to measure 
latency from host->kernel->USRP, etc.

- George