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Operating Systems: Concurrent and Distributed Software Design
book

Operating Systems: Concurrent and Distributed Software Design

by Jean Bacon, Tim Harris
March 2003
Intermediate to advanced content levelIntermediate to advanced
912 pages
27h 17m
English
Pearson Business
Content preview from Operating Systems: Concurrent and Distributed Software Design

7.6. Time in distributed systems

7.6.1. Physical earth time

We should first note that earth time is established only by convention. There is no universal time. Einstein proved that the velocity of light is constant for all observers irrespective of their velocity, see Figure 7.2.

Figure 7.2. Time beyond the earth.

Let us assume that our distributed system is earth based so that we can assume some notion of conventional physical time. Standard earth time is based on the earth's rotation in terms of days and years but accurate values are now derived from an atomically defined caesium clock. This time is (mis)named Universal Coordinated Time (UTC ...

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Publisher Resources

ISBN: 0321117891Purchase book