Performance Comparison of Real-Time and General-Purpose Operating Systems in Parallel Physical Simulation with High Computational Cost

• DOI: 10.4271/2014-01-0200
• Publication Date: 2014-04-02T10:10:57Z
• Authors: Carlos Garre; Domenico Mundo; Marco Gubitosa; Alessandro Toso
• Keywords: Interfacing; Real-time operating system; Response time; Embedded operating system; Turnaround time

Real-time simulation is a valuable tool in the design and test of vehicles vehicle parts, mainly when interfacing with hardware modules working at given rate, as hardware-inthe-loop testing. operating-systems (RTOS) are designed for minimizing latency critical operations such interrupt dispatch, task switch or inter-process communication (IPC). General-purpose (GPOS), instead, maximizing throughput heavy-load systems. In complex simulations where amount work to do one step high, achieving real-time depends not only event starting step, but also on capacity system computing available time. While it demonstrated that RTOS present lower latencies than GPOS, choice clear critical.