I have high(relatively) memory usage. Closing everything besides a single GNOME terminal instance(for free -m) still show usage of around 1.5 GiB and above.
I just counted and added together all the processes memory usage show in GNOME System Monitor. The total was around 610MiB.
Free -m showed 1.6GiB(A whole GiB out of thin air!).
GNOME System Monitor showed 2GiB(1.4GiB more seemingly from nowhere).
I would appreciate it if you helped me find out where all of this memory usage is coming from, and why memory usage grows the longer the system is up for(memory leak?).