Why performance optimization is hard work

Performance optimization in software development is a complex and challenging task. It requires exploring numerous combinations of techniques, dealing with unexpected interactions between optimizations, and extensive trial and error. Compilers have limitations in their optimization capabilities, often requiring manual intervention and assembly-level tweaks. The process is further complicated by hardware-specific considerations and lack of detailed documentation for some platforms. Despite these challenges, even small performance gains can compound to significantly improve user experience and save valuable time.