C++ Profiler on Windows

Question

I'm at the beginning with C++ and sometimes I don't know how much my compiler will like two different implementation of an alghoritm. Is there a simple tool I can use to see how much time takes my code to execute?

EDIT: Im using gcc compiler

Use the high precision timer to time your code doing your algorithm 1000 times. — brian beuning, Mar 01 '13 at 22:13

score 7 · Answer 1 · edited Aug 02 '17 at 05:34

7

Free

Not Free

edited Aug 02 '17 at 05:34

Xunie

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answered Mar 01 '13 at 22:03

Caesar

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Google Test does profiling?! – Adrian McCarthy Mar 01 '13 at 22:09

score 2 · Answer 2 · answered Mar 01 '13 at 22:08

I have had very good experience with AQtime from Smart Bear, it is not free, but you can get a free trial. It integrates really well into Visual C++ and RAD Studio from Embarcardero.

http://smartbear.com/products/qa-tools/application-performance-profiling

The data is easily accessible in the IDE, and especially the hit count and time spent numbers in the gutter section, next to the line numbers is useful.

score 2 · Accepted Answer · answered Mar 01 '13 at 22:14

2

If you want to mesure how long the entire program run's, then Code-Blocks/Visual studio should tell you when the program closes. It should be in the log at the bottom.

If you want to mesure how long a specific line, or function takes, I would suggjest researching clock() or QueryPerformanceFrequency() and how to use them.

the clock() function is slow, but it's easyer to use. an example:

float start_time = clock()/CLOCKS_PER_SEC;
func();
float end_time = clock()/CLOCKS_PER_SEC;
float dtime = start_time - end_time;

answered Mar 01 '13 at 22:14

Wolfgang Skyler

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Just bear in mind that `clock` does something different on Windows than on Unix (Linux, MacOS, etc). It makes little difference if your code is just plain code, but if you do I/O or otherwise cause the system to run something else, in Windows, `clock` gives the total time the code ran, where in Unix it gives the CPU-time consumed by the program - so something doing 10 seconds of file-I/0 may come out as `0.02s`, because that's how much of the time was actually the CPU-time, but it took 10 seconds "real time". – Mats Petersson Mar 01 '13 at 23:18

C++ Profiler on Windows

3 Answers3

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