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    Nested QoS: Providing flexible SLAs in shared storage systems

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    Author
    Wang, Hui
    Date
    2012
    Advisor
    Varman, Peter J.
    Degree
    Master of Science
    Abstract
    The increasing popularity of storage and server consolidation introduces new challenges for resource management, capacity provisioning, and application performance guaranteeing. In addition, the bursty nature of storage workloads results in a large gap between the peak and the average capacity required to meet response time bounds, leading to low overall server utilization and high cost. This situation is driving the development of elastic QoS models that allow clients greater flexibility in adopting SLAs tailored to their workload characteristics and performance requirements, while allowing the service provider opportunities to optimize provisioning and scheduling decisions. This thesis presents a novel service model, called the Nested QoS model, for multiplexing concurrent bursty workloads in shared storage systems. The solution employs two strategies together: systematically classifying requests with a graduated QoS and flexibly scheduling the classified portions. The results show that the Nested QoS model provides (i) performance isolation and strong performance guarantees for both well-behaved and misbehaving workloads; (2) a flexible and auditable elastic SLA definition; and (3) improved server utilization.
    Keyword
    Applied sciences; Computer engineering; Electrical engineering; Computer science
    Citation
    Wang, Hui. "Nested QoS: Providing flexible SLAs in shared storage systems." (2012) Master’s Thesis, Rice University. https://hdl.handle.net/1911/70483.
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    • ECE Theses and Dissertations [597]
    • Rice University Electronic Theses and Dissertations [13783]

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    Home | FAQ | Contact Us | Privacy Notice | Accessibility Statement
    Managed by the Digital Scholarship Services at Fondren Library, Rice University
    Physical Address: 6100 Main Street, Houston, Texas 77005
    Mailing Address: MS-44, P.O.BOX 1892, Houston, Texas 77251-1892
    Site Map