Gprof-C + + performance analysis tool

Reprinted from:

C + + Performance Test Tool Gprof + kprof + gprof2dot in Linux environments

Add-PG Compilation options:

gcc/g++-G-PG File.c[c]

Run a.out to generate Gmon.out

./a.out

Generate Intermediate Analysis files

Gprof./a.out > Prof.log

Abbreviated brief output of common parameters-B brief

Gprof-b./a.out > Prof.log

-Q print Function call relationship

Gprof-q./a.out > Prof.log

-P Print a flat profile

Gprof-p./a.out > Prof.log

https://github.com/jrfonseca/

Generate Program Flowchart

Gprof./test | gprof2dot.py | Xdot

Gprof-b./test Gmon.out | Gprof2doc > A.dot

Gprof2dot default is a partial function call graph, does not have the performance influence small function call to display, for example does not appear in the class construction, the destructor,

If you want to display all of the function calls, you can gprof2dot-n0-e0 , the default is n0.5, which affects less than 5% of the function is not displayed.

Of course, this picture will be very messy, because the display of a lot of content, you can gprof2dot-n0-e0-s #-s that does not display such as templates, function entry parameters and so on, so that

Function name display is more streamlined.

Gprof-C + + performance analysis tool