Persistent Operating Systems Software

Persistent Operating Systems Software

Persistence is the trait of maintaining system state despite discontinuities in operation or use, such as from one use of a program to the next use. In simple terms, persistent programs lose no, or little, information if the system becomes inoperative suddenly. As most computer users know, many computers often become inoperative suddenly, for two main reasons: the electric power stops, or a program crashes. When using persistent OSs, if the plug is pulled out suddenly, and the screen goes black, the computer can be plugged back in, and is up and running again quickly, almost exactly where it left off, losing no, or little (at most only a few seconds) work. Clearly, this demands some effort by designers, but is not difficult if one is willing to suffer a small performance loss. The difficulty lies in designing programs that are persistent with no performance lose.

Top: Computers: Software: Operating Systems: Persistent

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Architecture of the PEVM: A High-Performance Orthogonally Persistent Java Virtual Machine - Describes design, implementation of new scalable, high performance implementation of orthogonal persistence for Java platform (OPJ). Based on Sun Microsystems Labs Virtual Machine for Research (ResearchVM); features: optimizing Just-In-Time compiler, exac
A Persistent System in Real Use: Experiences of the First 13 Years - Eumel and successor L3, OSs made by GMD, have been used for 13 and 4 years respectively, for production in business, education. Over 2000 Eumel, 500 L3 have shipped since 1979, 1988. Both rely on persistence, with fault-surviving. Description, links. [Res
Forest Project - Investigated using persistent object technology in building large-scale software development environments. In time, became more about developing persistent object technology; broadened scope to provide support for all Java applications that manage long-li

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