Matthew Dillon’s added support for kqueue in Hammer; as part of that, he’s added a new ‘monitor‘ utility. If you’re curious about what kqueue is, look at the FreeBSD, NetBSD, and Mac OS X versions. Edit: and of course, the DragonFly version.
A running description of activity related to DragonFly BSD.
Why not take http://leaf.dragonflybsd.org/cgi/web-man?command=kqueue§ion=ANY ?
The man page wasn’t in there yet at the time I was putting the post together.
… and I added the link. Chances are good that I was a dingaling and missed it before, in any case.