hmpc

TL;DR: We can speed up timestamps on x86 Linux by 30% and maintain the same precision as the standard system clock by implementing our own timers without relying on vDSO.

Table of contents Introduction Case 1: Modular increment The scenario Peephole optimisations Loop invariants All roads Case 2: Endianness conversion The scenario Instruction selection Helping the compiler Ordering, redux Shooting ourselves in the foot Con…

A tale of three functions The year is 2005.

A few years back, some time after the Wordle craze abated, I found a new word game called Waffle and promptly got hooked.