[ndnSIM] ndnAppDelayTracer

[Sirapop Theeranantachai]

Hi, Salwa

DelayTracer records the delay when the Application installed in a node
receives the Data it requests.
If that's the case, I suspect that the delay tracer is unable to either 1)
attach to the installed application due or 2) the data doesn't arrive at
the original interest sender. Could you check if the Data packet actually
arrives at the Interest sender?

If the data already arrives at the node, the consumer application should
have the following lines to inform the tracer.

https://github.com/named-data-ndnSIM/ndnSIM/blob/90d50396654dabad54b6979f2dc8fa929ade544c/apps/ndn-consumer.cpp#L68C1-L76C77

I'm not familiar with VNDN, but it is possible that the Consumer you are
currently using does not contain

>       .AddTraceSource("LastRetransmittedInterestDataDelay",
>                       "Delay between last retransmitted Interest and
> received Data",
>
> MakeTraceSourceAccessor(&Consumer::m_lastRetransmittedInterestDataDelay),
>
> "ns3::ndn::Consumer::LastRetransmittedInterestDataDelayCallback")
>
>       .AddTraceSource("FirstInterestDataDelay",
>                       "Delay between first transmitted Interest and
> received Data",
>
> MakeTraceSourceAccessor(&Consumer::m_firstInterestDataDelay),
>
> "ns3::ndn::Consumer::FirstInterestDataDelayCallback");


Hope this helps.

On Thu, May 30, 2024, 12:16 PM Salwa Abdelwahed <salwa201067 at gmail.com>
wrote:

> Hi Sirapop ,
> Thanks for response.
>
> I'm simulating a VNDN scenario.
> I used other app tracers , it's functional.
> But the problem is with the delay tracer, even if i use à simple ndn
> scenario.
>
>
>
> Le jeu. 30 mai 2024, 20:13, Salwa Abdelwahed <salwa201067 at gmail.com> a
> écrit :
>
>> Hi Sirapop ,
>> Thanks for response.
>> I'm simulating a VNDN scenario.
>> I used other app tracers , it's functional.
>> But the problem is with the delay tracer .
>>
>> Le jeu. 30 mai 2024, 18:32, Sirapop Theeranantachai <sirapop741 at gmail.com>
>> a écrit :
>>
>>> Hi,
>>> Could you please kindly provide a bit more information about the
>>> scenario you are running? You should be able to see the delays in the txt
>>> file if the consumer receives the data. Maybe add ndn.Consumer to NS_LOG to
>>> see whether the data arrives?
>>> Thank you.
>>>
>>> On Thu, May 30, 2024, 9:08 AM Salwa Abdelwahed via ndnSIM <
>>> ndnsim at lists.cs.ucla.edu> wrote:
>>>
>>>> Hi all ,
>>>>
>>>> I'm trying an ndnSIM simulation example with: AppDelayTracer
>>>> I get an empty .txt file .
>>>> I don't know if there are other things to add to get results .
>>>>
>>>> Thanks
>>>> _______________________________________________
>>>> ndnSIM mailing list
>>>> ndnSIM at lists.cs.ucla.edu
>>>> https://www.lists.cs.ucla.edu/mailman/listinfo/ndnsim
>>>>
>>>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.lists.cs.ucla.edu/pipermail/ndnsim/attachments/20240530/ca5d5e2c/attachment-0001.htm>