Hi Amit, > Basically, I would like to have a graphical display showing me the > call flow between the various functions- starting and ending at the > starting function. I have thought about it a bit. I have written a > regex to identify the various columns. After some intermediate data > storage using a stack, I shall use the information to prepare a 'dot' > file which I plan to feed to 'dotty' (Graphviz) to give me the call > graph. > > Is this a good approach? Has anybody tried something similar?
A good while ago now I did exactly this with pretty good results. I put a brief blog together on what was done: http://blogs.sun.com/jonh/entry/dtrace_and_visualisation Simon Ritter improved on this first pass attempt and developed a more interactive experience for generating call graphs: http://blogs.sun.com/simonri/entry/i_m_sorry_dave_i The software that Simon developed (called 'DAVE') is actually pretty nice. The last time I saw it you could graph Java and native methods together and even do some database related graphing. Over this summer though Simon and I have taken this idea one step further. We're now using the Java Monkey Engine (a 3D games engine) to visualise the graphs (we're still obviously using DTrace as the instrumentation technology and the graphviz libraries for the core graph generation). Using the Monkey Engine we can generate interactive 3D call graphs which we can move through and manipulate in 3D object space. In fact, rather gratuitously really, we've implemented an anaglyph technique so you can even wear 3D glasses (red/cyan) so the graph comes out the screen at you! All good fun. Jon. _______________________________________________ dtrace-discuss mailing list dtrace-discuss@opensolaris.org
