Manual Reference Pages - MONSTARTUP (3)
- control execution profile
moncontrol int mode
monstartup u_long lowpc u_long highpc
An executable program compiled using the
automatically includes calls to collect statistics for the
call-graph execution profiler.
In typical operation, profiling begins at program startup
and ends when the program calls exit.
When the program exits, the profiling data are written to the file
where progname is the name of the program, then
can be used to examine the results.
selectively controls profiling within a program.
When the program starts, profiling begins.
To stop the collection of histogram ticks and call counts use
to resume the collection of histogram ticks and call counts use
This feature allows the cost of particular operations to be measured.
Note that an output file will be produced on program exit
regardless of the state of
Programs that are not loaded with
may selectively collect profiling statistics by calling
with the range of addresses to be profiled.
specify the address range that is to be sampled;
the lowest address sampled is that of
and the highest is just below
Only functions in that range that have been compiled with the
will appear in the call graph part of the output;
however, all functions in that address range will
have their execution time measured.
Profiling begins on return from
The following environment variables affect the execution of
If set, the pid of the process is inserted into the filename.
execution data file
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