yoyo mode

n. 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.

