Gprof
Table of Contents
It is a performance profiling tool for the running time of procedures.
1 Steps
1.1 Compile and Run program
Compile with flag -pg
. It should appear in both compile and link
options, otherwise no call-graph will be produced. Running program as
normal, and gmon.out
will be produced in the current working directory.
1.2 Running gprof
gprof OPTIONS EXECUTABLE-FILE PROFILE-DATA-FILES
- options (pq as default, specify to overwrite)
- p
- flat profile
- q
- call graph
- A
- annotated source code
- if not given, use
a.out
- if not given, use
gmon.out
Most likely, no options needed. Just run gprof
in the same directory
with a.out
and gmon.out
, it will print to stdout
the flat
profile and call graph profile.