Performance evaluation of the Remote Cooperation System in PRIMA

Abstract

In order to achieve acceptable pelformance in enhanced DBMS different kinds of parallelism have to be enabled by appropriate implementation capabilities. The Remote Cooperation System (RCS) offers these capabilities. lt is the basic communication system of our enhanced DBMS called PRIMA. In this paper we present different implementations for RCS and an analysis of their pelformance behavior. In order to get a better assessment of these implementations, we compare our measurements to those obtained with conventional remote procedure call facilities offered by operating systems. The results demonstrate that RCS is suitable for supporting parallel query execution.

Mapping a parallel complex-object DBMS to operating system processes

“…In this section, we give a concise overview of the PRIMA system for the subsequent discussion about issues of parallelism. For more detailed descriptions see [ 13,14].…”

“…Furthermore, in order to allow pipelining between multiple stages of client-task/server-task relationships, a server task can return partial results to its client task. An efficient implementation of a runtime system [14] enables processing of fine-grained parallel tasks in multiple processes. Considering the operating system primitives, parallelism appears only, if multiple processes execute tasks simultaneously.…”