A distributed load-balancing policy for a multicomputer
Software—Practice & Experience
Attacking the process migration bottleneck
SOSP '87 Proceedings of the eleventh ACM Symposium on Operating systems principles
Impact of mobility on distributed computations
ACM SIGOPS Operating Systems Review
A brief survey of systems providing process or object migration facilities
ACM SIGOPS Operating Systems Review
The new structure of an operating system: the Apertos approach
EW 5 Proceedings of the 5th workshop on ACM SIGOPS European workshop: Models and paradigms for distributed systems structuring
ACM Computing Surveys (CSUR)
Object Migration Tool for Data Warehouses
International Journal of Strategic Information Technology and Applications
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Migration is one example of the insufficiently used potentials of distributed systems. Although migration can enhance the efficiency and the reliability of distributed systems, it is still rarely used. Two limitations contained in nearly all existing migration implementations prevent a widespread usage: migration is restricted to processes and the migration mechanism, i.e. the way state is transferred, is not adaptable to changing requirements.In our approach, migration is an operation provided by every object of any type. Triggered by higher level migration policies, the object migrates itself using an object-specific migration mechanism. Changing requirements are handled by higher level migration policies that adapt migration by exchanging the object's mechanisms.Adaptable migration was implemented within the BirliX operating system. Different migration mechanisms are accomplished by different meta objects, which can be attached to other objects. If an object has to be migrated, the meta object does the migration. Changing environmental requirements are handled by exchanging the meta object. As a result, each object has its own migration mechanism. The approach has been examined by implementing a couple of well-known migration mechanisms via meta objects. This paper describes the meta object implementation of the Charlotte migration mechanism.