A Commercial-Off-the-Shelf(COTS) dedication of a QNX real time operating system (RTOS)

A real-time operating system (RTOS) is an Operating System (OS) intended for real-time applications. Benchmarking is a point of reference by which something can be measured. AQNX is a kind of RTOS developed by QSSL (QNX Software Systems Ltd.) in Canada. ELMSYS is the brand name of a commercially available Personal Computer (PC) for such applications as Cabinet Operator Module (COM) of a Digital Plant Protection System (DPPS) and COM of a Digital Engineered Safety Features Actuation System (DESFAS). ELMSYS PC hardware is undergoing qualification procedure by KTL (Korea Testing Lab.) for use as a Cabinet Operator Module (COM). The QNX RTOS dedication is being researched by Korea Atomic Energy Research Institute (KAERI). This paper describes the outline and benchmarking test results of Priority Inversion, Deadlock, Context Switching, Message Passing, Synchronization and Deadline Violation of QNX RTOS under an ELMSYS PC platform.

I. Introduction

This paper addresses the benchmark test results including safety features for a Q^X Real Time Operating System(RTOS). This paper describes the acceptance criteria, testing environments, and test items for safety features, benchmarking methods, test items for benchmarking, and benchmarking test results. The Special Test as a Method I satisfies the IEEE Std 7-4.3.2 criteria and EPRI Topical Report, TR-I 06439 criteria for safety software in nuclear power plants. The results of a Commercial-Off-The- Shelf(COTS) Dedication for a QNX RTOS is planned for use in the commercial operation of nuclear power plants in Korea