use valgrind to know time(in seconds) spent in each function

Syntax_Error picture Syntax_Error · Jul 12, 2011 · Viewed 49.9k times · Source

is there any extension of valgrind, that can be used in the command window, that would help me know the time, in seconds, spent in each function in my C code?

thanks =)

Answer

Karoly Horvath picture Karoly Horvath · Jul 12, 2011

For machine instruction profiling use valgrind's callgrind (also, cachegrind can do cache and branch prediction profiling which is quite nice).

For time measurements use google's cpu profiler, it gives way better results than gprof. You can set sampling frequency and it can show the output as a nice annotated call graph.