Re: Re: why udp source and sink not work effieciny in gnuradio?

[Jim Melton]

Also, you need a throttle between your file source and UDO sink or you will try 
to send as fast as the file can read (which is almost certainly faster than 
your network. 

And, high speed network I/O generally requires some kernel tuning. 

Sent from my iPhone

> On Jul 4, 2023, at 3:57 AM, Marcus Müller <mueller@kit.edu> wrote:
> 
> Exactly this. By choosing UDP, you chose to drop packets when they are not 
> handled in time.
> So, this is working 100% as expected.
> 
> Best regards,
> Marcus
> 
>> On 04.07.23 09:20, Fabian Schwartau wrote:
>> Hi,
>> my guess would be that the file source and UDP sink are much faster than the 
>> UDP source and QT GUI Sink. As UDP is "fire and forget", the "transmitter" 
>> may be pushing more data over the network than the QT GUI Sink can handle.
>> To test this, you can replace the QT GUI Sink with a NULL sink, which just 
>> deletes the data. Or you can add a throttle block after the File Source to 
>> reduce the data rate.
>> Best,
>> Fabian
>>> Am 04.07.23 um 09:07 schrieb sp:
>>> why do UDP source and sink not work efficiently in Gnuradio?
>>> I want to use a UDP  source and sink in Gnuradio, for a low sample rate of 
>>> 10k I see that there is too many packet drop. why network tools does not 
>>> work effectively?
>>> can anyone guide you? thanks in advance
>>> 
>>> *more info:*
>>> I set payload size 1408 I set send null pkt as true or false all  state I 
>>> had not a good response
>>> see the screenshot and log
>>> 
>>> Screenshot from 2023-07-04 10-30-22.png
>>> 
>>> gr::log :WARN: udp_source0 - Too much data; dropping packet.
>>> gr::log :WARN: udp_source0 - Too much data; dropping packet.
>>> gr::log :WARN: udp_source0 - Too much data; dropping packet.
>>> gr::log :WARN: udp_source0 - Too much data; dropping packet.
>>> gr::log :WARN: udp_source0 - Too much data; dropping packet.
>>> gr::log :WARN: udp_source0 - Too much data; dropping packet.
>>> gr::log :WARN: udp_source0 - Too much data; dropping packet.
>>> gr::log :WARN: udp_source0 - Too much data; dropping packet.
>>> gr::log :WARN: udp_source0 - Too much data; dropping packet.
>>> gr::log :WARN: udp_source0 - Too much data; dropping packet.
>>> gr::log :WARN: udp_source0 - Too much data; dropping packet.
>>> gr::log :WARN: udp_source0 - Too much data; dropping packet.
>>> gr::log :WARN: udp_source0 - Too much data; dropping packet.
>>> gr::log :WARN: udp_source0 - Too much data; dropping packet.
>>> gr::log :WARN: udp_source0 - Too much data; dropping packet.
>>> gr::log :WARN: udp_source0 - Too much data; dropping packet.
>>> gr::log :WARN: udp_source0 - Too much data; dropping packet.
>>> gr::log :WARN: udp_source0 - Too much data; dropping packet.
>>> gr::log :WARN: udp_source0 - Too much data; dropping packet.
>>> gr::log :WARN: udp_source0 - Too much data; dropping packet.
>>> gr::log :WARN: udp_source0 - Too much data; dropping packet.
>>> gr::log :WARN: udp_source0 - Too much data; dropping packet.
>>> gr::log :WARN: udp_source0 - Too much data; dropping packet.
>>> gr::log :WARN: udp_source0 - Too much data; dropping packet.
>>> gr::log :WARN: udp_source0 - Too much data; dropping packet.
>>> gr::log :WARN: udp_source0 - Too much data; dropping packet.
>>> gr::log :WARN: udp_source0 - Too much data; dropping packet.
>>> gr::log :WARN: udp_source0 - Too much data; dropping packet.
>>> gr::log :WARN: udp_source0 - Too much data; dropping packet.
>>> gr::log :WARN: udp_source0 - Too much data; dropping packet.
>>> gr::log :WARN: udp_source0 - Too much data; dropping packet

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