Application/Traffic/Trace patch - A patch for the traffic trace generator code in ns-2.28
set tfile [new Tracefile] $tfile filename some_trace.bin $tfile set randomize_ true $tfile set debug_ false
The patch cleans up the code in ~ns/trace/traffictrace.cc a bit, adds graceful failure handling during setup(), and removes the harmless yet rather disturbing warning:
$ ns traffictrace.tcl warning: no class variable Trace:debug_
see tcl-object.tcl in tclcl for info about this warning.
Finally, the patch introduces a new instance variable called randomize_. If randomize_ is true (the default) the traffic trace generator starts from a random record of the trace maintaining backward compatibility. However, in some scenarios you may be interested in replaying the traffic trace exactly as it was captured, i.e. starting from the first record instead of an arbitrary point. After applying the patch, set randomize_ to false and the traffic trace generator will replay the trace from the first record instead of a random point.
After installing and validating ns-2.28 as per the distribution instructions, download the Application/Traffic/Poisson patch tarball ns-2.28-traffictrace.patch.tar.gz and save it in a temporary directory.
Name Last modified Size Description
Parent Directory -
ns-2.28-traffictrace.patch.tar.gz 15-Aug-2005 16:33 4.5K
The tarball contains the following files:
ns-2.28-traffictrace.patch the patch file README this file, containing installation instructions
You will need a recent version of patch (if you are using any recent GNU/Linux distribution at hand, then worry not). The Poisson patch works fine with GNU patch 2.5.4 and later. You can check the patch version with
$ patch -v
After unpacking the tarball, copy the patch file ns-2.28-poisson.patch into the ns-2.28 directory.
$ cp ns-2.28-ns-2.28-traffictrace.patch.patch your-path-to-ns-2.28 $ cd your-path-to-ns-2.28
The patch includes modifications to some of the ns-2.28 original files. If you want to keep backup copies of the original files, then use the following command:
$ patch -bNp1 < ns-2.28-traffictrace.patch
otherwise, type
$ patch -Np1 < ns-2.28-traffictrace.patch
which should give you the following output:
patching file doc/applications.tex patching file tcl/lib/ns-default.tcl patching file trace/traffictrace.cc
If, instead of the above, patch starts asking questions, type CTRL-C: your patch program is too old. Get a fresh GNU patch version from http://www.gnu.org/software/patch
If the patch was successfully applied, go ahead and compile ns-2
$ ./configure ... $ make clean ... $ make ...
Now you should be all set. Make sure to read the SYNOPSIS and DESCRIPTION sections of this manual page
Once the patch has been installed, you can delete ns-2.28-traffictrace.patch from the ns-2.28 directory.
Kostas Pentikousis, kostas AT cpan dot org.
Copyright (C) 2004, 2005 by Kostas Pentikousis. All Rights Reserved.
This patch to Application/Traffic/Trace is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
The patch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details at http://www.gnu.org/licenses/gpl.txt
