[brodney]

Read this: http://blog.bignerdranch.com/1907-hooked-on-dtrace-part-1/

[Xdes]

Or you could just give a concise definition:

    >What is this "DTrace" thing? It stands for "Dynamic Tracing",
    >a way you can attach "probes" to a running system
    >and peek inside as to what it is doing.

[brodney]

It was my mistake to link you to a tutorial on the thing you are asking about. I don't know what came over me.