TEMPO: A Network Time Controller for a Distributed Berkeley UNIX System

Riccardo Gusella and Stefano Zatti

EECS Department, University of California, Berkeley

Technical Report No. UCB/CSD-83-163

1983

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http://www2.eecs.berkeley.edu/Pubs/TechRpts/1983/Archive/CSD-83-163.pdf

TEMPO keeps the clocks of computers in a local network synchronized with an accuracy comparable to the resolution of each individual clock. In a loosely-coupled network the machines can only compute the differences between the times of their clocks. A new algorithm has been devised to perform this measurement; a protocol based on it can adjust the clocks by means of a new system call that has been added to the kernel of clocks by means of a new system call that has been added to the kernel of the Berkeley UNIX 4.2BSD operating system.

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p> Several experiments show that a total quasi ordering can be based on the unique network timing maintained by the service.

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p>Cover title: TEMPO: Time Services for the Berkeley Local Network

BibTeX citation:

@techreport{Gusella:CSD-83-163,
    Author= {Gusella, Riccardo and Zatti, Stefano},
    Title= {TEMPO: A Network Time Controller for a Distributed Berkeley UNIX System},
    Year= {1983},
    Month= {Dec},
    Url= {http://www2.eecs.berkeley.edu/Pubs/TechRpts/1983/5983.html},
    Number= {UCB/CSD-83-163},
    Abstract= {TEMPO keeps the clocks of computers in a local network synchronized with an accuracy comparable to the resolution of each individual clock. In a loosely-coupled network the machines can only compute the differences between the times of their clocks. A new algorithm has been devised to perform this measurement; a protocol based on it can adjust the clocks by means of a new system call that has been added to the kernel of clocks by means of a new system call that has been added to the kernel of the Berkeley UNIX 4.2BSD operating system.  <p>  Several experiments show that a total quasi ordering can be based on the unique network timing maintained by the service.  <p><b>Cover title:</b> TEMPO: Time Services for the Berkeley Local Network},
}

EndNote citation:

%0 Report
%A Gusella, Riccardo 
%A Zatti, Stefano 
%T TEMPO: A Network Time Controller for a Distributed Berkeley UNIX System
%I EECS Department, University of California, Berkeley
%D 1983
%@ UCB/CSD-83-163
%U http://www2.eecs.berkeley.edu/Pubs/TechRpts/1983/5983.html
%F Gusella:CSD-83-163