[ndnSIM] How to trace the latency of request, duration from sending the Interest to receiving corresponding Data

[Xiaoke Jiang]

Alex,
	Cool. I will try and give you feedback.

thanks

My Regards,
Xiaoke Jiang （蒋小可）

Ph.D Candidate,
Dept. of Computer Science and Technology,
Tsinghua University, P. R. China

On Jan 17, 2013, at 4:13 AM, Alexander Afanasyev <alexander.afanasyev at ucla.edu> wrote:

> Hi Xiaoke,
> 
> It is up to the particular application to track down Interest-Data latency.  There is another question regarding in which latency you're interested: just Interest-Data or first Interest for sequence number and reception of Data (which includes all the retransmission delays).
> 
> Currently in ndn::Consumer-based apps, there is tracking of just Interest-Data packets (i.e., without retransmission delays) within RTT estimator variable (Ptr<RttEstimator> m_rtt) and in timeout container (SeqTimeoutsContainer m_seqTimeouts).   
> 
> If you want/need the other delay, including all retransmission timeouts, then it should be straightforward to implement, for example, using SeqTimeoutsContainer structure (similarly how m_seqLifetimes in ndn::Consumer).
> 
> I think, and would do it when I can get time for that, it is a good idea to export both delay parameters as a trace sources in ndn::Consumer class, as well as write a simple metric helper.
> 
> ---
> Alex
> 
> On Jan 16, 2013, at 5:36 AM, Xiaoke Jiang <shock.jiang at gmail.com> wrote:
> 
>> Hi All, 
>> 	How to trace the latency of request, duration from sending the Interest to receiving corresponding Data.
>> 	
>> 	Is there anyone can give some hint? Thank you in advance.
>> 
>> thanks
>> 
>> My Regards,
>> Xiaoke Jiang （蒋小可）
>> 
>> Ph.D Candidate,
>> Dept. of Computer Science and Technology,
>> Tsinghua University, P. R. China
> 

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