상세정보
학술대회
Range-BW : I/O Scheduler for Predicable Disk I/O Bandwidth
- 발행일
- 201003
- 출처
- International Conference on Computer Engineering and Applications (ICCEA) 2010, pp.175-180
- 협약과제
- 09MS3200, 공개 SW 플랫폼 고도화를 위한 리눅스 커널 기술개발, 정성인
- 초록
- Disk I/O has been considered as serious bottleneck point in server system for a long time. In serious workload situation that we run several services in same system, we don't make sure important service has more I/O bandwidth than others and it causes performance degradation of the important service. So, they should be treated with discrimination in I/O resource management to guarantee the performance stability of each service. In this paper, we propose the new I/O controller, Range-BW, to satisfy the upper requirement. The proposed I/O controller supports the range bandwidth including the two concepts, guaranteeing of minimum bandwidth and limitation of maximum bandwidth in aspect of service. These features enable the administrator to use efficiently the limited I/O resources and to control it dynamically and freely according to the priority of the service. So, Range-BW is useful to maintain the stable performance of the specific application or service. © 2010 IEEE.
- KSP 제안 키워드
- Disk I/O, I/O Scheduler, I/O bandwidth, Long Time, Performance stability, Resource management, performance degradation, stable performance