Improving the reliability of commodity operating systems

Authors:
Michael M. Swift;Henry M. Levy;Brian N. Bershad
Affiliations:
University of Washington;University of Washington;University of Washington
Venue:
Improving the reliability of commodity operating systems
Year:
2005

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Abstract

Despite decades of research in fault tolerance, commodity operating systems, such as Windows and Linux, continue to crash. In this dissertation, I describe a new reliability subsystem for operating systems that prevents the most common cause of crashes, device driver failures, without requiring changes to drivers themselves. To date, the subsystem has been used in Linux to prevent system crashes in the presence of driver failures, recover failed drivers transparently to the OS and applications, and update drivers "on the fly" without requiring a system reboot after installation. Measurements show that the system is extremely effective at protecting the OS from driver failures, while imposing little runtime overhead.