Many Internet services refresh system by periodic restart
“Recursive Restart” (Candea, Fox) restarts optimal number of components of system
Reduces time to repair by 5X or more, depending on system
Major focus of Stanford ROC project
Source: G. Candea and A. Fox, “Recursive Restartability: Turing the Reboot Sledgehammer into a scalpel,” 8th Workshop on Hot Topics in Operating Systmes (HotOS-VIII), May 2001