Ruben’s blog

I continue looking for graph visualization software. I rn into prefuse. Looks promising, take a look into the gallery to see some examples.

But it´s still only a toolkit so it means that I have to develop at least a little application to be able to visualize my graph. I tried using the examples that come with prefuse and they work but they are not enough. I just converted my data to GraphML and I was able to load it into the GraphView example. But I need to add some functionality to it before I can actually use it to analyze my graph. I´m not sure I can use prefuse to print out the graph anyway so I´m giving up for a while. This graph thing it´s taking too much time, but I will try to come back to it some day.

After spending a bunch of time with the graphviz utilities (neato, dot, circo and twopi) trying to create a graph to understand the software dependencies between modules in a project I´ve been I assigned I realized that those tools don´t work well with large graphs. I tried and tried with no luck, I thought that the old linux kernel map poster used graphviz to create the poster but after googling a bit and reading the code for the FCGP project I found that they write PostScript directly. I was looking for something simpler.

After giving up with graphviz I found a bunch of tools for working with graphs most of them are toolkits to develop your own tools but then I hit GUESS. GUESS is a graph browser so to say. You generate a .gdf similar to graphviz’s .dot files and GUESS will layout the graph for you. But the really good thing is that it is a browser you can actually interact with the graph, changing the layout or coloring items, etc. It comes with a scripting language that allow to manipulate the graph very easily and to neat things like change the size of the nodes depending on the value of certain field of the node. All this in runtime. So if you wan to spot all the nodes in your graph where the field “module” is equal to “provisioning” you just enter this in the console

selectednodes = (module == "provisioning) 
selectednode.color = red

Pretty easy doesn´t it

I’ve moved this post to the following location

**UPDATE**: The files here will only run in JRE 1.6. I will try to provide JRE 1.5-compatible files as soon as possible. Thanks to Daniel for pointing this out.

If you are tired of the old “Graph Results” listener that JMeter provides

Click on the above image or here to see an enlarged version

Checkout this new JMeter plugin that provides a new Statistical Aggregate Report

Click on the above image or here to see an enlarged version

Installation

To install the plugin you only have to unzip the zipfile into the JMeter 2.2.1 installation dir. The zip file has four files, three of them go into the $JMETER_HOME/lib directory and the other file goes into the $JMETER_HOME/lib/ext directory.

Once is installed, restart JMeter and now you must see a new “Statistical Aggregate Report” in the Add -> Listener menu.

This plugin it’s mainly the work of Lars Krogjensen (he provided most of the code) I only modified it a bit and repackaged it. I’ll post the source code as soon as I can.

Hope you find it useful