ref: dcf466b34d62b087c003ecc6347a43e247217b65
parent: 42681cb8ee1bab11448ddda478f5791b6b7699e9
author: Sigrid Solveig Haflínudóttir <ftrvxmtrx@gmail.com>
date: Mon Feb 8 04:55:13 EST 2021
replace nsec() with nanosec(): less context switching