[ndnSIM] Print Queue length

[Alex Afanasyev]

Are you sure that you have anything in queue?  Do you have bursts or traffic/are you links fully saturated all the time?

---
Alex

On Dec 5, 2013, at 3:44 PM, Amin Karami <amin at ac.upc.edu> wrote:

> Yes, I used this code:
> 
>   //  get current queue size
>   uint32_t k;
>   Ptr<ndn::Pit> pit = node->GetObject<ndn::Pit> ();
>   Ptr<Channel> CH1 = node->GetDevice(2)->GetChannel();
>   Ptr<NetDevice> toDev = CH1->GetDevice (1);
>   PointerValue txQueue;
>   toDev->GetAttribute ("TxQueue", txQueue);
>   k = txQueue.Get<DropTailQueue> ()->GetNPackets();
> 
> 
> When i print "k", it is zero. Is there any wrong in my code? If my code is true, i may call wrong GetDevice number!
> 
> /Amin
> 
> 
> On 12/06/2013 12:17 ق.ظ, Ilya Moiseenko wrote:
>> The parent class Queue has a method “GetNPackets”
>> http://www.nsnam.org/docs/release/3.18/doxygen/classns3_1_1_queue.html#a50dcb693d5325708d8c90770f795eabc
>> 
>> Ilya
>> 
>> On Dec 5, 2013, at 3:10 PM, Amin Karami <amin at ac.upc.edu> wrote:
>> 
>>> Hi llya!
>>> I want to print the number of filled elements in queue in an interface in a specific time, not original (predefined) size of the queue. I think, i posted wrong title for my question :-)
>>> I could not find related attribute in your suggested link. I found these attributes: Mode, MaxPackets, MaxBytes
>>> 
>>> Is there any suggestion?
>>> 
>>> 
>>> Thank you in advance.
>>> 
>>> /Amin
>>> 
>>> On 12/05/2013 07:59 ب.ظ, Ilya Moiseenko wrote:
>>>> Hi Amin
>>>> 
>>>> 1) m_maxPackets is indeed private.
>>>> However, you can access this value by attribute named “MaxPackets"
>>>> See http://www.nsnam.org/docs/release/3.18/doxygen/classns3_1_1_drop_tail_queue.html for details
>>>> 
>>>> 2) Technically you can do this in NS3. And in real life routers can have different queue sizes. 
>>>> 
>>>> 
>>>> Ilya
>>>> 
>>>> On Dec 4, 2013, at 2:35 AM, Amin Karami <amin at ac.upc.edu> wrote:
>>>> 
>>>>> Hi Alex,
>>>>> I am going to print Queue length in a specific interface of a router. I wrote below function:
>>>>> 
>>>>> void PeriodicStatsPrinter (Ptr<Node> node, Time next)
>>>>> Ptr<ndn::Pit> pit = node->GetObject<ndn::Pit> ();
>>>>> Ptr<Channel> CH = node->GetDevice(2)->GetChannel(); \\ 2nd interface of the node
>>>>> Ptr<NetDevice> toDev = CH->GetDevice (1); \\ access to its queue
>>>>> PointerValue txQueue;
>>>>> toDev->GetAttribute ("TxQueue", txQueue);
>>>>> std::cout << Simulator::Now ().ToDouble (Time::S) << "\t"
>>>>> << Names::FindName (node) << "\t"
>>>>> << "Max Packets of Queue: " << txQueue.Get<DropTailQueue> ()->m_maxPackets << "\n";
>>>>> 
>>>>> 1- But, i faced with this error:
>>>>> ../scratch/RTT/RTT.cc: In function ‘void PeriodicStatsPrinter(ns3::Ptr<ns3::Node>, ns3::Time)’:
>>>>> ../scratch/RTT/RTT.cc:44:6: error: expected primary-expression before ‘<<’ token
>>>>> ./ns3/drop-tail-queue.h:68:12: error: ‘uint32_t ns3::DropTailQueue::m_maxPackets’ is private
>>>>> ../scratch/RTT/RTT.cc:44:58: error: within this context
>>>>> 
>>>>> 2- Could i define two Queue lengths for a specific interface in routers? from inside and outside of a link. Or both should be equal?
>>>>> 
>>>>> 
>>>>> /Amin
>>>>> _______________________________________________
>>>>> ndnSIM mailing list
>>>>> ndnSIM at lists.cs.ucla.edu
>>>>> http://www.lists.cs.ucla.edu/mailman/listinfo/ndnsim
>> 
> _______________________________________________
> ndnSIM mailing list
> ndnSIM at lists.cs.ucla.edu
> http://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/20131205/61831582/attachment.html>