This chapter describes anonymous tracing, tracing that is not associated with any
DTrace consumer. Anonymous tracing is used in situations when no DTrace consumer
processes can run. The most common use of anonymous tracing is to
permit device driver developers to debug and trace activity that occurs during
system boot. Any tracing that you can do interactively you can do
anonymously. However, only the super user may create an anonymous enabling, and
only one anonymous enabling can exist at any time.