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BSDun is a Linux kernel module that loads FreeBSD ELF binaries natively, bypassing the need for VMs or containers. By translating syscalls at the kernel level, it delivers near-native performance for FreeBSD software on Linux. This isn’t just a technical fix — it’s a unification of two rival Unix lineages.
For decades, Linux users treated swap as either essential or evil—both camps wrong because they were stuck in the HDD era. Modern SSDs make swap fast enough to be a safety net without killing performance. The real trick is tuning swappiness and swap size to your hardware, not copy-pasting old rules. This article breaks down the trade-off, busts common myths, and gives you a practical strategy to avoid OOM kills while keeping your system snappy.