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신뢰성 있는 멀티스택 기반의 가상화된 데이터 동시공유 시스템의 구현
한규종,전동운,김두현,Han, Kyujong,Jeon, Dongwoon,Kim, Doohyun 대한임베디드공학회 2016 대한임베디드공학회논문지 Vol.11 No.5
In this paper, we present an architecture for the fault isolation by applying virtualization-based multi-stack technologies. We propose the simultaneous sharing and switching mechanism using virtualied serial communications. Each guest OS has its own virtual serial device. The distribution module provides communications between the guest OS's through the virtual serial devices and simultaneously detect the liveness of the guest OS. The suggested mechanism has been implemented in VirtualBox and shows satisfactory performance in transmission speed and data sharing capability with virtual RS232.
유진호(Jinho Yoo),한규종(Kyujong Han),김용현(Yong-Hyun Kim),안미림(Mirim Ahn),김두현(Doo-Hyun Kim) 한국정보기술학회 2013 한국정보기술학회논문지 Vol.11 No.8
This paper is an execution environment study to implement the application process based on a PSTR model on a virtual machine. We will load one hardware system with two virtual machines for implementing the PSTR model. We conduct a research about configuration of management module, sharing of serial device simultaneously and communication between tasks on different virtual machines on virtual machine environment for implementing the PSTR model. The management module can be located on the host operating system or on another virtual machine. We decide the position of management module after the comparison of their performances. We analyze the task execution environment related to serial ports on the virtual machine because application tasks hold their serial ports in this study. After analyzing, we design and implement the modified virtual serial port suitable for the PSTR model. And we also make inter task communication functions on different virtual machines and compare the performance of this communication functions with a legacy communication method with their experimental results.