A deep dive into Debian 13 /tmp: What's new, and what to do if you don't like it

File is tmpfs will swap out if your system is under memory pressure.

If that happens, reading the file back is DRAMATICALLY slower than if you had just stored the file on disk in the first place.

This change is not going to speed things up for most users, it will slow things. Instead of caching important files, you waste memory on useless temporary files. Then the system swaps it out, so you can get cache back, and then it's really slow to read back.

This change is a mistake.

Most systems probably aren't having problems with insufficient RAM nowaday though, do they? And this will reduce wear on your SSD.

Also, you can easily disable it: https://www.debian.org/releases/trixie/release-notes/issues....