NSDI '05 Abstract
Quorum: Flexible Quality of Service for Internet Services
Josep M. Blanquer, Antoni Batchelli, Klaus Schauser, and Rich Wolski,
University of California, Santa Barbara
In this paper we describe Quorum, a
non-invasive approach to scalable quality-of-service provisioning that
uses traffic shaping, admission control, and response monitoring at
the border of an Internet site to ensure throughput and response time
We experimentally compare an implementation of
Quorum both to hardware over-provisioning and to leading software approaches using real world workloads. Our results show that Quorum can enforce the
same QoS guarantees as either of the compared approaches, while
achieving better resource utilization than over-provisioning and
without the application rewriting overhead required by intrusive
software approaches. We also demonstrate that our implementation can
successfully handle extreme situations such as sudden traffic surges,
application misbehavior and node failures. Furthermore, we demonstrate
the flexibility of Quorum by providing QoS guarantees for a complex
and heterogeneous Internet service that cannot be implemented by other
current software approaches.
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