Profiling Bash startup, lazy loading nvm and pyenv, cached completions and prompt overhead. Practical .bashrc changes guided by measurement.
.bashrc Optimization — Measuring and Speeding Up Bash Startup Read Post »
epoll reports readiness; io_uring returns operation results. Comparing I/O models, batching, SQPOLL and deployment constraints without universal RPS thresholds.
epoll vs io_uring — When the Event Loop Isn’t Enough Read Post »
Limiting process resources with cgroups v2 and systemd-run: controller hierarchy, CPU and memory budgets, and launching workers from Python.
cgroups v2 Without Docker — CPU and Memory Limits with systemd Read Post »
What Linux copies after fork() and what stays shared: copy-on-write, file offsets, mutexes, exec and collecting child-process status.
Linux fork() — Copy-on-Write, File Descriptors and Child Processes Read Post »