Pretty high idle ram usage. Ksysguard doesn’t really indicate what is eating up my ram. It goes back to about 1.2GiB after rebooting so I think something is leaking memory.
Well you do have 274 processes running in that screenshot ─ some of which I don’t even recognize.
Baloo does occasionally run to update its databases, and this spawns several processes and uses more memory. But this would normally be a transient thing, provided that the machine is up long enough.
Likewise, if you’re using KMail or any other KDE component that depends on Akonadi, this may also occasionally lead to an increase in the number of running processes and the amount of memory used, but this too is only a transient situation.
I don’t think I use either