Re: [Discuss-gnuradio] anyone have success with USRP2 @ 20MHz to the host cleanly?

[Dan Halperin]

On Nov 22, 2009, at 10:11 AM, George Nychis wrote:
> Has anyone here had any success with receiving 16-bit samples from the USRP2 
> @ 20MHz to the host without an onslaught of overruns?  I did some searching 
> on the list and some people suggested a RAID configuration, but this is my 
> poor little laptop.  Just wanted to get a general consensus. 

20 MHz @16bps is 80 MB/s right? That's just not going to work on a laptop hard 
drive without doing some major compression. I wrote a gzip_file_sink at some 
point in the past but the libz compression was too slow to even keep up with 8 
MHz @ 16bps. You could try looking for an alternate compression algorithm. I 
hear LZO is faster for instance.

IMO the best option for a laptop is an SSD. I do get about ~80 MB/s sequential 
write with my Intel SSD. But 160 GB isn't a lot if you're going to be doing 20 
MHz sampling!

Dan