The state in which the system is said to be
when it rapidly alternates several times between being up and being
down. Interestingly (and perhaps not by coincidence), many
hardware vendors give out free yoyos at Usenix exhibits.
Sun Microsystems gave out logoized yoyos at SIGPLAN '88. Tourists
staying at one of Atlanta's most respectable hotels were
subsequently treated to the sight of 200 of the country's top
computer scientists testing yo-yo algorithms in the lobby.
casters-up mode n.
[IBM, prob. fr. slang belly up] Yet
another synonym for `broken' or `down'. Usually connotes a
major failure. A system (hardware or software) which is `down'
may be already being restarted before the failure is noticed,
whereas one which is `casters up' is usually a good excuse to
take the rest of the day off (as long as you're not responsible for
fixing it)....