jsguy questions

• Why does this C++ program take so long to finish if you run it as a root?
• Why do you have to call delete for local variables of a function that are stored in the heap?
• Why is accessing a private variable of a class as efficient as accessing a variable of a struct?
• Why does Perf and Papi give different values for L3 cache references and misses?
• Why isn't G++ compiler treating these two functions the same way?
• Why is DFS slower in one tree and faster in the other?
• How to make matplotlib show all x coordinates?
• Why does this C++ function produce so many branch mispredictions?

jsguy answers