[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Discuss-gnuradio] Why am I dropping data over the UDP network?

From: Marcus Müller
Subject: Re: [Discuss-gnuradio] Why am I dropping data over the UDP network?
Date: Sat, 12 Jul 2014 02:58:44 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0

No, building vectors out of streams would (in the best case) change
nothing, as you don't send individual samples but always packets full of

Also, if you have a hardware device defining your data rate, you will
never need a throttle, and having one will most likely only introduce
problems, so remove it from your flowgraph. All throttle really does is
trying to achieve a given *average* sample processing rate, and that
interferes with the hardware *constantly* providing a sample rate.

A few numbers in my head: 500ksps = 500 * 32kbps = 16000kbps, not very
much for a gigabit ethernet! So I think it's safe to assume that the
physical network is not to blame here, and usually the CPU load, maybe
introduced by network handling might be to blame, if this doesn't happen
with a null sink.


On 11.07.2014 19:49, madengr wrote:
> Funny that I was doing the exact same thing last night, and I'm also getting
> warnings on the receive end at only 500 ksps on a home LAN.
> Should the stream be vectorized before the UDP sink, and if so how long?  I
> tried both stream and vectors but still get the warnings.
> Lou
> Ward, Marcus D. wrote
>> Hey Everyone,
>> I am sending a signal from one USRP to another USRP through a UDP network.
>> It seems to work but I am getting data loss as gnu-radio runs the flow
>> graph. Hopefully someone could help me with this problem?
>> P.S. I have the sender side (RecieveStation.jpg) and the Reciever/Display
>> side (RecieveDisplay.jpg) attached
> --
> View this message in context: 
> http://gnuradio.4.n7.nabble.com/Why-am-I-dropping-data-over-the-UDP-network-tp49283p49286.html
> Sent from the GnuRadio mailing list archive at Nabble.com.
> _______________________________________________
> Discuss-gnuradio mailing list
> address@hidden
> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio

reply via email to

[Prev in Thread] Current Thread [Next in Thread]