Activity Divergence

Sometimes we have several Threads of Activity (Volume 4, page 339, for example, from the same process) visible for a certain period of time and then suddenly we see only one such thread till the end of a trace (or even none). This may be an indication of an application hang or some other abnormal behavior if several active threads doing logging are normal. If we consider such activities (including Adjoint Threads, Volume 5, page 283) as vectors running through some temporal “surface” we can use an analogy of a divergence⁷²:

⁷² http://en.wikipedia.org/wiki/Divergence