[Discuss-gnuradio] CPU Utilization and USRP2

[David Campbell]

Hi All,
   I've noticed that the C++ interfaces provided in gnu-radio and UHD for usrp2 
data streaming are CPU-intensive (UHD moreso than gnu-radio).  I am wondering 
if 
there are easy ways to mitigate this or are there plans in the future to 
diminish these.  For UHD a decimate by 16 process chews up 75% of a CPU just on 
the uhd::device::recv functiion (not much less even when I use 
RECV_MODE_FULL_BUFF and size the buffer to be 100x the size of a single 
packet).  For gnuradio's  the CPU utilization is more like 36% - still a lot. 

  I may try to recode some of the lower-level interfaces in UHD if there is not 
an easy way to help improve CPU utilization. 

  Thanks for your help,
David