面向I/O优化调度器的磁盘特征提取  

The Extraction of Disk Characteristics for I/OOptimized Schedulers

作　　者：张巨[1] 肖予钦[1] 景宁[1] 陈宏盛[1] 

机构地区：[1]国防科技大学电子科学与工程学院,湖南长沙410073

出　　处：《国防科技大学学报》2003年第4期53-58,共6页Journal of National University of Defense Technology

摘　　要：外存I/O一直是影响I/O密集型应用系统性能的决定性因素。在系统分析I/O优化调度策略及其对磁盘特征参数的需求的基础上,提出了一组面向I/O优化调度器的磁盘特征抽取方法。这些抽取方法已经被证明是高效的,并且在Traxtents Cello调度器的实现中得到采用。IOs of the external memory are still the key fact or to the performance of IO-intensive applications. Based on the systematical ana lysis of I/O-optimized scheduling policies and their requirement to characteris tics parameters of disk, this paper introduces a set of I/O-scheduler-oriented disk characteristics extracting methods. These methods have been proved efficie nt and introduced into the implementing of Traxtents-Cello scheduler.

关 键 词：磁盘驱动器 SCSI IDE 磁盘调度 磁盘特征抽取 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]