Lehrgebiet Informationssysteme

FB Informatik

LG IS

AG DBIS

(C) AG DBIS

Extended Memory Support for High Performance Transaction Systems

Volker Bohn, Theo Härder, Erhard Rahm

University of Kaiserslautern
P.O. Box 3049, 67653 Kaiserslautern, Germany
e-mail: haerder@informatik.uni-kl.de

Full paper (postscript version compressed by gzip)

Abstract:

To achieve high performance transaction systems vertical as well as horizontal system growth is considered. A prime obstacle for linear performance growth is the unfavourable ratio of I/O time vs. CPU time in systems using conventional disk architecture. For this reason, we propose a fast and non-volatile extended memory which pro vides synchronous page-oriented access for closely coupled processors. We discuss its properties supporting high volume transaction processing. Subsequently, we investigate its performance behavior using simulation driven by load models derived form real applications. Simulation results are presented for centralized and dis tributed computing environments.

Published in Proc. 6. GI/ITG-Fachtagung "Messung, Modellierung und Bewertung von Rechensystemen", München, Informatik-Fachberichte 286, Springer, 1991, pp. 92-108.