[USRP-users] UHD 3.10.2 | X300 - High CPU load even for low samples rate
brent.stapleton at ettus.com
Thu Oct 19 13:57:26 EDT 2017
Fully consuming one core isn't unusual. Why do you think you're not
If you want to isolate the USRP performance, you could use UHD example
code, like benchmark_rate (in /path/to/prefix/lib/uhd/examples/). This will
provide a summary after running, and may give an indication of what
problems you're seeing.
On Thu, Oct 19, 2017 at 7:25 AM, Kai-Uwe Storek via USRP-users <
usrp-users at lists.ettus.com> wrote:
> after experiencing some problems (time outs, etc) with the current UHD
> develop version (master branch) I changed the UHD version to 3.10.2
> (maint branch, #122bfae).
> To do so, I just used the prefix recipe gnuradio-stable via pybombs.
> Now I'm not able to transmit even low bandwidth signals. My setup is
> - X300 via 1G ethernet
> - gnuradio (maint branch)
> - Debian with kernel 4.9.
> I used a simple flow graph with just a sine source directly connected
> to the USRP sink block. Even for sample rates below 2MSamples/s one of
> the cpu core of my Xeon E5-2630 v2 is 100% busy.
> Observing the cpu load with htop, I recognized that most of the cpu
> load is red which indicates kernel space activities...
> After several seconds I finally got many "U"s in the console window.
> Some ideas how to isolate the problem?
> Thanks in advance!
> USRP-users mailing list
> USRP-users at lists.ettus.com
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