tmux overhead

[John Klos <john%ziaspace.com@localhost>]

Hi, all,

Since tmux is part of a standard NetBSD install, I've been using it 
instead of screen. So far, so good. However, I've noticed that it 
accumulates a LOT of CPU time even when the underlying tty and shell are 
doing absolutely nothing. On a 60 MHz m68060 system that's been up for 53 
days, for instance, and with a shell that's sitting at a quiet prompt:

25403 john      85    0  6144K 2312K kqueue    44.1H  4.05%  4.05% tmux

44 HOURS? Wow. And while it's otherwise idle, it's taking around 4% CPU.

Ideas about why this is so busy?

John