Benchmarking method calls in C?

You could use the inbuilt Stopwatch class to "Provides a set of methods and properties that you can use to accurately measure elapsed time. " if you are looking for a manual way to do it. Not sure on automated though.

Thanks, that's what I needed. – Toms Mikoss Oct 26 '09 at 7:45.

Sounds like you want a profiler. I would strongly recommend the EQATEC profiler myself, it being the best free one I've tried. The nice thing about this method over a simple stopwatch one is that it also provides a breakdown of performance over certain methods/blocks.

2 +1 for a nice free profiler! – TrueWill Oct 26 '09 at 2:56.

I stole most of the following from Jon Skeet's method for benchmarking: private static void Benchmark(Action act, int interval) { GC.Collect(); Stopwatch sw = Stopwatch.StartNew(); for (int I = 0; I.

Adding local GC.Collect() may make you miss memory global allocation problems that affect performance, however it makes the local measurements more accurate. – Danny Varod Oct 25 '09 at 23:32.

Profilers give the best benchmarks since they diagnose all your code, however they slow it down a lot. Profilers are used for finding bottlenecks. For optimizing an algorithm, when you know where the bottlenecks are, use a dictionary of name-->stopwatch, to keep track of the performance critical sections during run-time.

Stolen (and modified) from Yuriy's answer: private static void Benchmark(Action act, int iterations) { GC.Collect(); act.Invoke(); // run once outside of loop to avoid initialization costs Stopwatch sw = Stopwatch.StartNew(); for (int I = 0; I Also, you want to divide the total execution time by the number of iterations, so that your estimate is more-or-less independent of the number of iterations.

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