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IOTune: A G-states Driver for Elastic Performance of Block Storage by Lu, Tao; Huang, Ping; He, Xubin; Welch, Matthew; Gonzales, Steven; Zhang, Ming is a scholarly article available to read on EtoBox.

What is IOTune: A G-states Driver for Elastic Performance of Block Storage about?

Imagining a disk which provides baseline performance at a relatively low price during low-load periods, but when workloads demand more resources, the disk performance is automatically promoted in situ and in real time. In a hardware era, this is hardly achievable. However, this imagined disk is becoming reality due to the technical advances of software-defined storage, which enable volume performance to be adjusted on the fly. We propose IOTune, a resource management middleware which employs software-defined storage primitives to implement G-states of virtual block devices. G-states enable virtual block devices to serve at multiple performance gears, getting rid of conflicts between immutable resource reservation and dynamic resource demands, and always achieving resource right-provisioning for workloads. Accompanying G-states, we also propose a new block storage pricing policy for cloud providers. Our case study for applying G-states to cloud block storage verifies the effectiveness of the IOTune framework. Trace-replay based evaluations demonstrate that storage volumes with G-states adapt to workload fluctuations. For tenants, G-states enable volumes to provide much better QoS wi

Author

Lu, Tao; Huang, Ping; He, Xubin; Welch, Matthew; Gonzales, Steven; Zhang, Ming

Published

2017

Language

EN