Real-time and dependability comparison of Delta-4/XPA and MARS systems

Sérgio Melro and Paulo Veríssimo

INESC Technical Report (RT/09-92)

Abstract

Both Delta-4/XPA and MARS are distributed systems specially devoted to the control of very demanding environments in terms of real-time (timely and correct actions) and dependability (reliability and availability). Each system has different approaches to the problem. This paper presents, compares, and discusses the two approaches taken by Delta-4/XPA and MARS, focusing on the options taken with respect to real-time and fault tolerance.

Also available as INESC RT/9-92 (gzip postscript).