CachyOS is an Arch-based Linux distribution focused entirely on performance. Founded in 2022, it has risen to become DistroWatch's #1 trending distribution — a remarkable achievement for a relatively young project. What sets it apart is not just its Arch foundation, but a deeply custom kernel and build pipeline designed to squeeze maximum performance out of modern hardware.
Kernel & Performance Optimizations
The headline feature is the CachyOS kernel, which ships with the BORE (Burst-Oriented Response Enhancer) CPU scheduler — a significant departure from the default Linux scheduler, tuned for better desktop responsiveness and gaming frame times. The kernel is compiled using Profile-Guided Optimization (PGO) and Link-Time Optimization (LTO), meaning the binary itself is optimized based on real-world workload profiling. CachyOS also maintains its own repository of pre-compiled packages built with x86-64-v3 and x86-64-v4 instruction sets for CPUs that support them, delivering measurably better performance compared to generic Arch packages.
Desktop Environment & Usability
CachyOS ships KDE Plasma as the primary desktop environment, but the installer offers a wide choice including GNOME, Hyprland, i3, Wayfire, XFCE, and more — making it one of the few Arch-based distros where DE selection is built into the graphical installer. The installer itself (Calamares-based) is straightforward for anyone familiar with Linux, though it assumes more comfort with disk partitioning than a beginner-oriented distro would. Package management uses Pacman with full AUR access via the included paru helper, plus the CachyOS-specific repository for its optimized packages.
Who Should Use CachyOS?
CachyOS targets users who want the flexibility and cutting-edge packages of Arch Linux without the manual installation process, and who specifically want better performance for gaming, creative workloads, or general desktop use. It's best suited for intermediate to advanced Linux users comfortable with rolling-release update cadences and terminal usage when needed. Gamers benefit particularly from the BORE scheduler and gaming-focused kernel tweaks, while developers appreciate the latest toolchain versions always being available.