Profile: N. 1. A Control File For A Program, Esp.

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:profile: n. 1. A control file for a program, esp. a text file
automatically read from each user's home directory and intended to
be easily modified by the user in order to customize the program's
behavior. Used to avoid {hardcoded} choices (see also {dot
file}, {rc file}). 2. [techspeak] A report on the amounts of
time spent in each routine of a program, used to find and {tune}
away the {hot spot}s in it. This sense is often verbed. Some
profiling modes report units other than time (such as call counts)
and/or report at granularities other than per-routine, but the idea
is similar.
-- The AI Hackers Dictionary