https://mvega.dev/tags/linux/Recent content in Linux on Moises VegaHugoen-usMoises VegaThu, 03 Sep 2026 00:00:00 +0000https://mvega.dev/posts/go-scavenger-thp-oom/Thu, 03 Sep 2026 00:00:00 +0000https://mvega.dev/posts/go-scavenger-thp-oom/<p>A fleet of Go services kept getting OOM-killed inside containers whose memory limits were generous — two to three times the live heap the runtime reported. We had <code>GODEBUG=madvdontneed=1</code> set from years back, so I expected RSS to track the heap closely. Instead RSS climbed in a sawtooth that never came back down, while <code>runtime.MemStats.HeapReleased</code> insisted the memory had been handed back to the kernel.</p> <p>Both were telling the truth. The host had <code>/sys/kernel/mm/transparent_hugepage/enabled</code> set to <code>always</code>.</p>https://mvega.dev/posts/dotfiles-with-stow/Thu, 13 Aug 2026 00:00:00 +0000https://mvega.dev/posts/dotfiles-with-stow/<p>Dotfile setups tend to start as a repo full of files plus a shell script that copies them into <code>$HOME</code>. The copies drift from the repo, the script grows special cases, and eventually nobody is sure which version is real.</p> <p>GNU Stow removes the copy step. One directory per tool, and <code>stow &lt;tool&gt;</code> symlinks its contents into the parent directory. Editing the repo edits the live config, because they are the same file.</p>