What's your favorite profiling tool (for C++)
So far, I've only used Rational Quantify. I've heard great things about Intel's VTune, but have never tried it!
Edit: I'm mostly looking for software that will instrument the code, as I guess that's about the only way to get very fine results.
See also:
What are some good profilers for native C++ on Windows?
For linux development (although some of these tools might work on other platforms). These are the two big names I know of, there's plenty of other smaller ones that haven't seen active development in a while.
For Linux: Google Perftools
My only experience profiling C++ code is with AQTime by AutomatedQA (now SmartBear Software). It has several types of profilers built in (performance, memory, Windows handles, exception tracing, static analysis, etc.), and instruments the code to get the results.
I enjoyed using it - it was always fun to find those spots where a small change in code could make a dramatic improvement in performance.
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