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A Decentralized Resource Allocation Approach for Response-time Guarantees in Storage System |
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PP: 53S-60S |
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Author(s) |
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Liu Liu,
, Lu Xu,
Dezhi Yang,
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Abstract |
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We present a decentralized resource allocation approach, DRG (Decentralized Response-time Guarantee), that can provide response time guarantees for multiple concurrent workloads sharing a back-end storage system in a distributed manner without assuming any support from the storage itself. This new approach uses several run-time statistics of both workloads and system as indicators of busty and load condition at the backend storage and accepts a control equation periodically to adjust the number of I/O requests which could be issued per workloads to meet the performance goals. Using a real I/O trace, we demonstrate that our approach can simultaneously meet the response-time requirements imposed by an SLO without requiring extensive knowledge of the underlying storage system. |
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