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Author Afek, Yehuda ♦ Awerbuch, Baruch ♦ Plotkin, Serge ♦ Saks, Michael
Source ACM Digital Library
Content type Text
Publisher Association for Computing Machinery (ACM)
File Format PDF
Copyright Year ©1996
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Diffusing computations ♦ Distributed computation ♦ Distributed network management ♦ Resource management
Abstract This paper introduces a new distributed data object called Resource Controller that provides an abstraction for managing the consumption of a global resource in a distributed system. Examples of resources that may be managed by such an object include; number of messages sent, number of nodes participating in the protocol, and total CPU time consumed.The Resource Controller object is accessed through a procedure that can be invoked at any node in the network. Before consuming a unit of resource at some node, the controlled algorithm should invoke the procedure at this node, requesting a permit or a rejection.The key characteristics of the Resource Controller object are the constraints that it imposes on the global resource consumption. An (M, W)-Controller guarantees that the total number of permits granted is at most $\textit{M};$ it also ensures that, if a request is rejected, then at least $\textit{M—W}$ permits are eventually granted, even if no more requests are made after the rejected one.In this paper, we describe several message and space-efficient implementations of the Resource Controller object. In particular, we present an (M, W)-Controller whose message complexity is $\textit{O(n}$ $log2\textit{n}$ $log(\textit{M/(W}$ + 1)) where $\textit{n}$ is the total number of nodes. This is in contrast to the $\textit{O(nM)}$ message complexity of a fully centralized controller which maintains a global counter of the number of granted permits at some distinguished node and relays all the requests to the node.
ISSN 00045411
Age Range 18 to 22 years ♦ above 22 year
Educational Use Research
Education Level UG and PG
Learning Resource Type Article
Publisher Date 1996-01-01
Publisher Place New York
e-ISSN 1557735X
Journal Journal of the ACM (JACM)
Volume Number 43
Issue Number 1
Page Count 19
Starting Page 1
Ending Page 19


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Source: ACM Digital Library