Title :
An experimental implementation of unified real-time operating system
Author :
Sato, Koichi ; Tsuboto, H. ; Yamamoto, Osamu ; Saitoh, Kazunori
Author_Institution :
LSI Lab., Mitsubishi Electric Corp., Hyogo, Japan
Abstract :
The authors are developing a unified OS which provides superior real-time response and versatile functionality simultaneously. To accomplish both features, this OS consists of two kernels. One is called ν-kernel and has large number of system calls (about 130). The other is called p-kernel and is characterized by short interrupt masking time (maximum 15 μsec). The ν-kernel is compressed into a task in the p-kernel in order to achieve short interrupt latency. Using facilities of inter-kernel communication and synchronization. this OS makes it possible to realize a decentralized real-time application system by distributing p-kernels to multiple microprocessors
Keywords :
multiprocessing systems; operating systems (computers); real-time systems; scheduling; TRON project; decentralized real-time application system; inter-kernel communication; microprocessors; multiprocessors; scheduling; short interrupt latency; short interrupt masking time; synchronization; unified real-time operating system; Costs; Delay; Hardware; Kernel; Laboratories; Large scale integration; Large-scale systems; Operating systems; Real time systems; User interfaces;
Conference_Titel :
TRON Project Symposium, 1991. Proceedings., Eighth
Conference_Location :
Tokyo
Print_ISBN :
0-8186-2475-2
DOI :
10.1109/TRON.1991.213116
