[USRP-users] Help improving USRP B200 throughput

Tom Tsou tom at tsou.cc
Mon Sep 8 13:05:56 EDT 2014


On Sun, Sep 7, 2014 at 8:30 PM, Jason Heym via USRP-users
<usrp-users at lists.ettus.com> wrote:
> CPU usage by txrx_loopback_to_file is about 50% of one core on an 8
> core Intel Core i7 CPU.  "benchmark_rate --tx_rate 16000000" uses 24%
> of one core. All other cores are idle. And the computer is generally
> idle (minimal programs running). CPU usage does not seem to be an
> issue.

Utilization at 50% is higher than I would expect.

Can you provide 'perf top' output to get a better idea at what's going on?

https://perf.wiki.kernel.org/

  -TT




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