On 02/16/2011 02:50 AM, Sivaramakrishnan B C wrote: > Hi All, > > I was wondering if there is any buffering happening on the host and/or on > the USRP (USRP1 and N210) when the UHD send() and recv() methods are called? >
Yes of course. There are buffers in the host and device (fifos). -josh > > Thanks, > Shiva > > On Thu, Feb 3, 2011 at 10:40 AM, Josh Blum <j...@ettus.com> wrote: > >> >>> 1. What is the parameter --spb, samples per buffer. And generally, what >> is >>> this buffer? >> >> This is the buffer that the application fills with samples, and passes >> into the call device->send() >> >>> 2. What is the relationship between spb (sample per buffer), duration >>> (number of seconds to transmit) and rate (rate of outgoing samples) and >>> wave-freq (waveform frequency in Hz)? >>> >> >> Samples per buffer is independent of these other variables. Indirectly, >> it controls how often the call to send() occurs. The option is there to >> allow users to experiment with various buffer sizes. >> >> -josh >> >> _______________________________________________ >> Discuss-gnuradio mailing list >> Discuss-gnuradio@gnu.org >> http://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> > _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
