open base isnt a problem, else it wouldnt be writing to it in the first place. the server doesnt use fpm, it uses mod php, we found more permission errors and resolution time wasting when using fpm, and benchmarks show its no faster on our hardware so we stick with what we know best 🙂 i guess /tmp/mpdf/ creartes more than ttffont directory? it must do its thing so fast we cant catch anything else under mpdf/ if it does, then it removes that but not the ttffont directory ( or similar named, I'm not in front of it right now)