[ndnSIM] how to get the transmission delay

[Alex Afanasyev]

Hi Xiaoke,

The delays that are observed by app-delay-tracer include everything you mentioned (queuing delay, propagation delay, which is related to packet size), except processing delay.  This exception comes from the fact that in NS-3 unless you specifically simulate processing delay (which requires additional models), each function call, no matter how complex, is running in zero simulation time.

---
Alex

On May 9, 2013, at 8:53 AM, Xiaoke Jiang <shock.jiang at gmail.com> wrote:

> What's more, I am not sure whether the delay includes the router processing time, such as creating PIT entry, Content Store look up , etc.
> 
> thanks
> 
> My Regards,
> Xiaoke Jiang （蒋小可）
> 
> Ph.D Candidate,
> Dept. of Computer Science and Technology,
> Tsinghua University, P. R. China
> 
> On May 9, 2013, at 11:33 PM, Xiaoke Jiang <shock.jiang at gmail.com> wrote:
> 
>> Hi all,
>> 	I am trying to get the transmission delay with app tracer. But I am not sure what's concluded in the delay. For example, Queuing time on the router, transmitting time on the wire, etc.
>> 	Can anyone give me any hints? Thank you in advance.
>> 	
>> in my file:
>>   Config::SetDefault ("ns3::PointToPointNetDevice::DataRate", StringValue ("10Mbps"));
>>   Config::SetDefault ("ns3::PointToPointChannel::Delay", StringValue ("1ms"));
>> 
>> 
>> And is the delay related to packet size?
>> 
>> 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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