readme.txt

trpr是可以分析tcpdump和mgen日志记录

         TRace Plot Realtime (trpr) Distribution
     
OVERVIEW:

This directory contains the source code and documentation
for the "trpr" program which allows a graphical display of
the quantity of network traffic captured over time with an
instance of the popular "tcpdump" tool.  "Trpr" has filter
options and can display plots for different "flows" of data
(defined by protocol type, source, and destination).  It
is designed to be used with the "gnuplot" plotting program.

With the "drec" option or "ns" option , "trpr" will also 
process log files from  the "drec" program from the MGEN 
toolset or provide analyses of "ns" (Berkeley's network 
simulator) trace files.

FILES:

README.TXT  - this file.

trpr.cpp    - C++ source code for the "trpr" program

trpr.html   - HTML build instructions and user's guide.

hcat.cpp    - C++ source code for "hcat", the histogram
              concatenation program.

TO BUILD:

gcc -o trpr trpr.cpp -lm

gcc -o hcat hcat.cpp -lm


HCAT Usage:

The Histogram Concatenator ("hcat") is useful for post-processing
the histogram output produced by "trpr".  "hcat" can be used to 
combine multiple histograms and to retrieve some summary statistics
from the histogram data.  

Usage: 

hcat [normalize] [percent [<rangeMin>:]<rangeMax>] file1 [file2 file3 ...]

Options:

normalize  - The minimum bin is adjusted to correspond to zero.  Other
             bins are correspondingly linearly adjusted.
             
percent [<rangeMin>:]<rangeMax> - Calculates the percentage of data
                                  points lying in the specified range.
                                  
The <files> are expected to contain histogram data in pairs of data in  the
order of minimum bin to maximum bin, with the first value of the pair
specifying the bin and the second value specifying the number of data
points for that histogram bin.  Lines beginning with '#' are ignored as
comments.



Brian Adamson
<[e-mail]>
<http://manimac.itd.nrl.navy.mil>
26 December 2001