I’m a long-term mpd user (some 16+ years), but for $reasons I have to compile it myself now – and, boy, that is one heavy program. Takes several minutes to build. 😳

I saw 100% I/O wait in htop today but couldn’t find a process which actually does I/O. Turns out, I/O wait isn’t what it used to be anymore:

https://lwn.net/Articles/989272/

In my case, it was mpd which triggered this:

https://github.com/MusicPlayerDaemon/MPD/issues/2241

mpd doesn’t actually do anything, it just sits there and waits for events. To my understanding, this is similar to something blocking on read(). I’m not quite sure yet if displaying this as I/O wait (or “PSI some io”) is intentional or not – but it sure is confusing.

I was looking for an #mpd/#rofi script and stumbled upon this repo adi1090x/rofi, it is just 🤤 DELICIOUS! … and a great reference/kick starter for making my own.