Recursion performance: why so slow?

Questions & Help Questions
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7

And I got a free moment while waiting for something, so hey, a C++ version using the high_resolution_clock (generally the slowest yay)!

Here is just C++'s since I don’t want to wait for the rest to run:

─➤  ./test_cpp 
7628.14
╰─➤  cat test.cpp 
#include <iostream>
#include <chrono>

int main() {
  using namespace std::chrono;
  int interval = 20;
  high_resolution_clock::time_point end = high_resolution_clock::now() + seconds(20);
  int n = 0;
  while((end - high_resolution_clock::now()).count() > 0.0) n += 1;
  std::cout << (n / 20000.0) << std::endl;
  return 0;
}

Ooo lookie here, C++ is almost as slow as Elixir’s! The BEAM VM uses a very high resolution timer too. :wink: