On Page-Based Optimistic Process Checkpointing

  • Authors:
  • D. Hulse

  • Affiliations:
  • -

  • Venue:
  • IWOOOS '95 Proceedings of the 4th International Workshop on Object-Orientation in Operating Systems
  • Year:
  • 1995

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Abstract

Abstract: Persistent object systems must provide some form of checkpointing to ensure that changes to persistent data are secured on non-volatile storage. When processes share or exchange modified data, mechanisms must be provided to ensure that they may be consistently checkpointed. This may be performed eagerly by synchronously checkpointing all dependent data. Alternatively, optimistic techniques may be used where processes are individually checkpointed and globally consistent states are found asynchronously. This paper examines two eager checkpointing techniques and describes a new optimistic technique. The technique is applicable in systems such as SASOS, where the notion of process and address space are decoupled.