On Tue, Aug 01, 2006 at 08:26:58PM -0400, Lee Patton wrote:
> I see a single USRP underrun (uU) about four out of five times that my
> application starts. My transmit work() routine couldn't be simpler: a
> for-loop that moves data from a local buffer to the output buffer. So,
> I don't think I can scale it back or anything.
>
> Is there anything I can do to avoid these uU at startup? Does anyone
> know what might be causing them? Unfortunately my application can't
> tolerate any under/overruns.
>
> Thanks,
> -Lee
Have you tried enabling real time scheduling?
You'll need to be running as root or have CAP_SYS_NICE for it to work.
See gnuradio-examples/python/gmsk2/tunnel.py
# Attempt to enable realtime scheduling
r = gr.enable_realtime_scheduling()
if r == gr.RT_OK:
realtime = True
else:
realtime = False
print "Note: failed to enable realtime scheduling"
Eric
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