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.