Web search using mobile cores: Quantifying and mitigating the price of efficiency
The commoditization of hardware, data center economies of scale, and Internet-scale workload growth all demand greater power efficiency to sustain scalability. Traditional enterprise workloads, which are typically memory and I/O bound, have been well served by chip multiprocessors comprising of small, power-efficient cores. Recent advances in mobile computing have led to modern small cores capable of delivering even better power efficiency. While these cores can deliver performance-per-Watt efficiency for data center workloads, small cores impact application quality-of-service robustness, and flexibility, as these workloads increasingly invoke computationally intensive kernels. These challenges constitute the price of efficiency. We quantify efficiency for an industry-strength online web search engine in production at both the microarchitecture-and system-level, evaluating search on server and mobile-class architectures using Xeon and Atom processors. Copyright 2010 ACM.
Reddi, VJ; Lee, BC; Chilimbi, T; Vaid, K
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