Queuing Models in NS2

M/M/1 is a system with poisson arrival time, servicing exponentially and a queue of unlimited capacity and type of FIFO Queue. This is the simplest queuing system.  NS2 supports various distributions like pareto, exponential, constant, unifrom, etc to handle the network dynamics and metrics. So it is very easy to test the given network link to monitor a given queue using any of these queuing models. The listing 3 and 4 are monitoring the link when DropTail queue is used with a capacity of finite and infinite. Listing 13.3 uses infinite capacity and Listing 13.4 uses Finite capacity The output screen shot is shown below the scripts for further understanding
Listing 3 – M/M/1 Queuing Model #new Simulator creation set ns [new Simulator] #trace file creation for capturing the UDP data set tf [open out.tr w] $ns trace-all $tf
#setting the exponential distribution param set lambda 30.0 set mu     33.0
#creation of nodes set n1 [$ns node] set n2 [$ns node] #The queue limit is 1Lakh as the capacity is infin…

Linux Kernel and Embedded Systems Apps in Windows 8

Dear readers, 

Thanks are using my website for technical information. Scaling to a new level, I have published two apps in Windows 8 app store, one related to linux kernel and other on Embedded systems

Of course, both of the mateirals are already there in this blog. 

So readers can download offline to see the contents related to embedded system and linux kernel and the advanatage is, they are free to download.

Here are the links to download

Embedded Systems - http://apps.microsoft.com/webpdp/app/embeddedsystems/d38a2fd9-1ca3-4e17-a003-ef3be532608b

Linux Kernel App - http://apps.microsoft.com/webpdp/app/linux-kernel/a61626c3-f135-4492-8a3d-64bd84c7ab40

I am planning to launch these and other apps in android also soon. Wait for my apps.

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