What exactly happens when a process touches a bad address. From the MMU and page table through the kernel page fault handler to core dump analysis in gdb — null deref, stack overflow, use-after-free.
Your terminal takes 800 ms to start. Bash loading anatomy, lazy loading version managers, completion caching, PS1 without synchronous git status — and how to drop to 50 ms without compromises.
Anatomy of two Linux I/O models. epoll vs io_uring, readiness vs completion, syscall overhead, SQPOLL — and when reaching for io_uring instead of an event loop actually pays off.
DRY has become a dogma that destroys more code than it saves. When duplication is the correct architectural decision — and how to recognize the moment when chasing “Don’t Repeat Yourself” stops being engineering.
Skip the container abstraction layer. Enforce CPU, memory & I/O limits directly via cgroupfs — zero daemon overhead, no OCI ceremony. A deep dive into cgroups v2 on Arch Linux.