CODEWITHSUNDEEP
c++profiling
Boolean
Boolean

Reputation: 14664

Good c++ profiler for GCC

I tried to find a related question but all previous questions are about profilers for native c++ in windows. I googled a while and learned about gprof, but the output of gprof actually contained lot of obscure internal functions. Is there a good opensource c++ profiler with good documentation?

Upvotes: 10

Views: 17817

Answers (6)

Mike Dunlavey
Mike Dunlavey

Reputation: 40699

Don't use gprof, for the reasons given here.

What you need are stackshots, explained here. One way to take stackshots is the pstack utility. Another way is to use "Pause" or ctrl-break under the debugger. Also lsstack, if you can get a copy.

If you want to spend money, RotateRight makes a nice tool based on stack sampling called Zoom.

Upvotes: 6

learnvst
learnvst

Reputation: 16193

How much detail do you need in your profile reports. If you just want to do some really simple time profiling for a few functions, then the new functionality available via the C++11 chrono classes makes it easy to profile in a cross platform, cross compiler way.

See this article for some simple profiling code that works similarly to Matlab's super easy to use tic and toc functions.

Upvotes: 0

Engineer
Engineer

Reputation: 8865

I've heard oprofile is really, really good for real time apps. Linux only though, AFAIK.

Upvotes: 0

okun
okun

Reputation: 338

If you don't mind the KDE library dependencies, KCachegrind is very useful with the added visualization. It depends on Callgrind and Valgrind, as one could have guessed, so no special compiler flags required during compile-time.

Upvotes: 1

LiraNuna
LiraNuna

Reputation: 67302

Compile using the flag -pg and use gprof.

Upvotes: 3

iamslash
iamslash

Reputation: 126

Valgrind

I totally recommend this http://en.wikipedia.org/wiki/Valgrind

Upvotes: 10

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