[harrisi]

Erlang does have a mechanism to modify process priority, with process_flag/2,3.

As of OTP 28 there's also priority messaging that a process can opt in to. Not really related, but it's new and interesting to note.

[jacquesm]

> As of OTP 28 there's also priority messaging that a process can opt in to.

That's a very important feature. Without priority messaging you can't nicely recover from queues that start backing up.