Noise reduction in computer process synchronisation

Abstract

This article describes how to gain a noise tolerable computer process synchronisation (e.g. a mutual exclusion problem in a real time system). The algorithm ensures the avoidance of busy wait for processes while sharing common resources such as disk drive, floating-point processor etc., without using any hardware fixes to control noise/EM disturbances. This software technique is a very useful tool in designing system with high fault tolerance and system reliability.