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MOS 커널에서의 락과 세마포어 관련 오류의 동적 디버깅 기법
강성익(Sung-Ick Kang),박상서(Sang-Seo Park),김성조(Sung-Jo Kim) 한국정보과학회 1993 한국정보과학회 학술발표논문집 Vol.20 No.2
MOS(Multiprocessor Operating System) 커널 개발시 락 설정 범위(lock granularity)를 부적절하게 설정하거나 락과 세마포어를 잘못 사용함으로서 시스템 성능의 저하 혹은 교착상태 방생 등의 문제가 빈번히 발생할 수 있다. 본 논문에서는 동작중인 MOS 커널에서 세마포어와 락에 관련된 정보를 동적으로 추출하여 분석한 뒤 우선순위(hierarchy), 일관성(consistency) 및 락 설정 범위의 조사와 교착상태 검출을 지원하는 락과 세마포어 관련 동적 디버깅 기법에 관하여 기술한다.
장윤배(Chang, Yoon-Bae),이주아(Lee, Joo-Ah),강성익(Kang, Sung-Ik),이훈(Lee, Hoon) SH도시연구원 2017 주택도시연구 Vol.7 No.3
To draw policy implications for rational operation of the upper FAR, this study examines the FAR standards of the apartment reconstruction projects of each local governments in Gyeonggi province and analyzes the level of the FAR standards considering the characteristics of local government and regional characteristic. On the basis of research purpose, this study set up indicators to evaluate the FAR standard level of the apartment reconstruction projects by local governments, and quantitatively evaluated them in terms of revitalization of reconstruction projects, prevention of monopolization of real estate development profits, and balanced development of regions. As a research method, this study used the FGI(Focus Group Interview) to set the FAR evaluation criteria and to classify the weights of the criteria through the AHP(Analytic Hierarchy Process) analysis method. Based on the derived criteria and weights, this study compares the FAR standards of 31 local governments in Gyeonggi Province by the aspects of regional equity and apartment reconstruction. As a result, this study revealed the areas where it is necessary to regulate the FAR standards somewhat because the areas are easy to secure the feasibility of reconstruction projects compared to other regions. The analysis also reveals areas where voluntary reconstruction projects occurring by FAR mitigation is expected to proceed. In addition, the results of the analysis show areas where the FAR standard needs to be relaxed in terms of regional equity.