- # Copyright (C) 1999 by USC/ISI
- # All rights reserved.
- #
- # Redistribution and use in source and binary forms are permitted
- # provided that the above copyright notice and this paragraph are
- # duplicated in all such forms and that any documentation, advertising
- # materials, and other materials related to such distribution and use
- # acknowledge that the software was developed by the University of
- # Southern California, Information Sciences Institute. The name of the
- # University may not be used to endorse or promote products derived from
- # this software without specific prior written permission.
- #
- # THIS SOFTWARE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
- # WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
- # MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- #
- # An example script that simulates large-scale web traffic.
- # See web-traffic.tcl for a smaller scale web traffic simulation.
- #
- # This is intended to be a simpler version than the large-scale-web-traffic.tcl
- # but consists of more than one objects per page.
- #
- # Created by Polly Huang (huang@catarina.usc.edu)
- # Modified by Haobo Yu (haoboy@isi.edu)
- global num_node n verbose
- set verbose 0
- source varybell.tcl
- # Basic ns setup
- set ns [new Simulator]
- # Create generic packet trace
- $ns trace-all [open my-largescale.out w]
- # Defined in varybell.tcl
- create_topology
- ########################### Modify From Here #####################
- # Create page pool
- set pool [new PagePool/WebTraf]
- # Setup servers and clients
- $pool set-num-client [llength [$ns set src_]]
- $pool set-num-server [llength [$ns set dst_]]
- set i 0
- foreach s [$ns set src_] {
- $pool set-client $i $n($s)
- incr i
- }
- set i 0
- foreach s [$ns set dst_] {
- $pool set-server $i $n($s)
- incr i
- }
- # Number of Sessions
- set numSession 5
- # Inter-session Interval
- set interSession [new RandomVariable/Exponential]
- $interSession set avg_ 1
- ## Number of Pages per Session
- set sessionSize [new RandomVariable/Constant]
- $sessionSize set val_ 5
- # Random seed at every run
- global defaultRNG
- $defaultRNG seed 0
- # Create sessions
- $pool set-num-session $numSession
- set launchTime 0
- for {set i 0} {$i < $numSession} {incr i} {
- set numPage [$sessionSize value]
- puts "Session $i has $numPage pages"
- set interPage [new RandomVariable/Exponential]
- $interPage set avg_ 15
- set pageSize [new RandomVariable/Constant]
- $pageSize set val_ 3
- set interObj [new RandomVariable/Exponential]
- $interObj set avg_ 0.01
- set objSize [new RandomVariable/ParetoII]
- $objSize set avg_ 12
- $objSize set shape_ 1.2
- $pool create-session $i $numPage [expr $launchTime + 0.1]
- $interPage $pageSize $interObj $objSize
- set launchTime [expr $launchTime + [$interSession value]]
- }
- ## Start the simulation
- $ns at 800.1 "finish"
- proc finish {} {
- global ns
- $ns flush-trace
- exit 0
- }
- puts "ns started"
- $ns run