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引用次数: 1
摘要
在数据中心和云计算中，QoS (Quality of Service)是一个重要的概念，因为必须确保访问共享资源，包括ssd (solid state drives)。以前提出的工作负载感知预算补偿(WA-BC)调度算法是一种设备I/O调度程序，用于保证共享SSD的多个虚拟机之间的性能隔离。本文旨在解决WA-BC的三个缺点:(1)它只适用于支持ssd的SR-IOV;(2)它不适合各种类型的工作负载;(3)它单独管理闪存块的方式不合适。我们提出了主机级WA-BC (hWA-BC)调度器，它旨在实现共享开放通道SSD的多个进程之间的性能隔离。
Host-Level Workload-Aware Budget Compensation I/O Scheduling for Open-Channel SSDs
In datacenters and cloud computing, Quality of Service (QoS) is an essential concept as access to shared resources, including solid state drives (SSDs), must be ensured. The previously proposed workload-aware budget compensation (WA-BC) scheduling algorithm is a device I/O scheduler for guaranteeing performance isolation among multiple virtual machines sharing an SSD. This paper aims to resolve the following three shortcomings of WA-BC: (1) it is applicable to only SR-IOV supporting SSDs, (2) it is unfit for various types of workloads, and (3) it manages flash memory blocks separately in an inappropriate manner. We propose the host-level WA-BC (hWA-BC) scheduler, which aims to achieve performance isolation between multiple processes sharing an open-channel SSD.
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