Boot Loader Benchmarks: Measuring GRUB's Real Overhead and the Alternatives Fighting to Replace It
GRUB has dominated Linux boot loading for decades, but its complexity carries measurable performance costs that faster alternatives expose in direct comparison. We ran boot-time benchmarks across multiple hardware configurations, compared GRUB against systemd-boot and direct UEFI boot, and investigated why distributions continue to ship a boot loader that most users could replace with something significantly leaner.