Comment by jeffbee

It's unfortunately a hard message to sell, but your program itself should never be backed by a file, for this exact reason. All code should be remapped into anonymous memory that is 1) right where you want it; 2) backed by hugepages; and 3) not shared. You are gaining nothing by trying to share objects with other processes, and you are losing a great deal of performance. The tradeoff made a little sense in the 1980s when they came up with it but in this century it simply doesn't.