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-
- profile [-commands] on
- profile off arrayVar
- This command is used to collect a performance profile
- of a Tcl script. It collects data at the Tcl procedure
- level. The number of calls to a procedure, and the
- amount of real and CPU time is collected. Time is also
- collected for the global context. The procedure data
- is collected by bucketing it based on the procedure
- call stack, this allows determination of how much time
- is spent in a particular procedure in each of it's
- calling contexts.
-
- The on option enables profile data collection. If the
- -commands option is specifed, data on all commands
- within a procedure is collected as well a procedures.
- Multiple occurrences of a command within a procedure
- are not distinguished, but this data may still be
- useful for analysis.
-
- The off option turns off profiling and moves the data
- collected to the array arrayVar. The array is address
- by a list containing the procedure call stack. Element
- zero is the top of the stack, the procedure that the
- data is for. The data in each entry is a list
- consisting of the procedure call count and the real
- time and CPU time in milliseconds spent in the
- procedure (and all procedures it called). The list is
- in the form {count real cpu}. A Tcl procedure profrep
- is supplied for reducing the data and producing a
- report (see Tcl Package Library Procedures section).
-