Adaptive disk scheduling for overload management
Adaptive disk scheduling for overload management
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DOI：
10.1109/qest.2004.10011
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发表时间：
2004-09
期刊：
影响因子：
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通讯作者：
Alma Riska;E. Riedel;S. Iren
中科院分区：
文献类型：
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作者：
Alma Riska;E. Riedel;S. Iren
今天的大多数计算机系统在正常运行时都是轻负荷的。真正的性能问题发生在系统过载的突发时间。我们评估调度算法的选择如何帮助系统在瞬态过载下保持稳定的性能。本文提出了一种新的磁盘调度算法，通过动态调整磁盘调度参数来有效地处理过载。该算法根据当前负载条件进行调整，在保持请求响应时间最小可变性的同时，实现了良好的整体性能。我们评估了算法对不同磁盘的鲁棒性，以及在基准系统中测量的合成和现实轨迹。
Most computer systems today are lightly loaded in normal operation. The real performance problems occur during burst times when the system becomes overloaded. We evaluate how the choice of scheduling algorithms can assist a system in maintaining stable performance while operating under transient overloads. We propose a new disk scheduling algorithm that efficiently handles overload by dynamically adjusting its parameters. The algorithm adapts its operation to the current load conditions and achieves good overall performance, while maintaining minimal variability in the request response time. We evaluate the robustness of the algorithm against different disks and synthetic and realistic traces measured in benchmarked systems.