TSPLOT(1)TSPLOT(1)NAMEtsplot - Plot several tsung logs on the same charts, for comparison
purpose.
SYNOPSIStsplot [ -c configuration file ] [ -d images output directory ] [ -v
verbose ] [ legend logfile ]
DESCRIPTION
Tsung comes with a plotting tool using gnuplot, producing some graphs
from the tsung.log file data. tsplot is able to plot data from several
tsung.log files onto the same charts serie, for further comparison and
analyze.
OPTIONS-c
--config
specifies the configuration file to use. Default is
http.en.plots.conf.
-d
--outdir
directory where tsplot saves the images it produces, defaults to
/tmp/tsung.
-v
--verbose
makes tsplot very verbose about what it does.
CONFIGURATION
The configuration file of tsplot allows one to define the plots you
want to obtain, from their label to the data they will show. The con‐
figuration file adopts a .ini file syntax, each section defining a
chart.
tsplot comes with two sample configuration files, namely
http.plots.en.conf and pgsql.plots.en.conf. They respectively define
charts to be plotted for a tsung HTTP test and a tsung PGSQL test.
A DEFAULT section may be provided, any element configured here may then
be overridden into a specific plot section.
Another configuration file is used by tsplot: the tsung/stats.conf one.
It's used to define by type the statistics to be read into tsung log
files, and you shouldn't need to edit it, short of adding support for
new tsung statistics.
Common settings, to be found into DEFAULT section or any specific chart
section.
encoding
set here the encoding used thereafter in the file, for labels
and titles.
dpi dpi setting of produced charts images
tn_dpi dpi setting of produced charts thumbnail images
imgtype
type of chart image to produce, as in png or ps
A complete list might be obtained on the python-matplotlib web‐
site, http://matplotlib.sourceforge.net/
xlabel default label for horizontal axe, often you want seconds or min‐
utes, depending on xfactor.
Please note you can also set some defaults for ylabel, but this
seems not to be a good idea in practise.
xfactor
tsung logs statistics in its logfile every 10 seconds. By
default, charts will not scale this and have seconds as horizon‐
tal axis units. By setting an xfactor of 60, you have a minute
precision on horizontal axis.
yfactor
same as xfactor, but for vertical axis.
Depending on the data you obtain with your tests, you may want
to adapt the vertical scale of your plotting. For example, the
page.mean statistic is logged in milliseconds by tsung. You may
want to display seconds if this unit better fits your measures.
Then simply set yfactor = 1000.
styles set here any number of matplotlib styles you want to use, sepa‐
rated by spaces, as available here: http://matplotlib.source‐
forge.net/matplotlib.pylab.html#-plot.
For exemple, set styles = b- g+ r- cx for plotting first dataset
(see stats below) with a blue solid line, second with green plus
symbols, third with a red line and last with cyan cross symbols.
This could fit a stats = 200.count 400.count stats setting when
plotting two tsung logs.
You then can define any number of plot, one by section, and give them
an arbitrary name. The name must be unique, and will be used for naming
output images.
Any option available in DEFAULT section is also available in any spe‐
cific chart section, with the same meaning and effect. The specific
setting will systematically override the DEFAULT one.
title Title of the chart, as printed into the resulting image.
stats The statistics properties to use for this plotting, as named in
the tsung/stats configuration file. Please see this bundled file
for a list of what is available.
Tsung provide several types of statistics, as documented here:
http://tsung.erlang-projects.org/user_manual.html#htoc53. The
two main types of statistics used are sample and counter. A
third one is gauge but is only use for a single statistic
(users).
sample provides count, mean, stdvar, max, min and gmean (global
mean) properties, and counter provides only count and total‐
count. gauge provide count and max.
The stats setting can accept several stat.property elements,
separated by spaces.
Examples: stats = users.count to plot the number of simultane‐
ously connected users, and stats = 200.count 400.count to plot
given HTTP return codes count, both on the same chart.
Please notice tsplot is currently limited to use only one hori‐
zontal and only one vertical scales. matplotlib is able to
define some more complex drawings, but tsplot is not yet able to
benefit from this.
legend Legend prefix, which will be followed by the legend given on
command line.
Each plot on a chart has a legend entry, you configure here the
meaning of the plot (say 'concurrent users') and tsplot will add
it the name of the data serie being plotted (say 'scenario x').
You'd obtain this legend: 'concurrent users scenario x'.
ylabel label for vertical axe
CONFIGURATION EXAMPLE
Please see the given configuration examples which should be distributed
in /usr/share/doc/tsung/tsung-plotter/http.plots.en.conf and
/usr/share/doc/tsung/tsung-plotter/pgsql.plots.en.conf.
BUGS
Please reports bugs to the mailing list <tsung-users@process-one.net>
or in the bug tracker <URL:https://support.process-
one.net/browse/TSUN>, see also <URL:https://lists.process-
one.net/mailman/listinfo/tsung-users> for archives.
AUTHORStsplot is written by Dimitri Fontaine <dim@tapoueh.org>.
February 2007 TSPLOT(1)
