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- W2885451520 abstract "Recently, high performance packet I/O frameworks are expected an extensive application for their ability to process packets from 10Gbps or higher speed links. To achieve high throughput and low latency, high performance packet I/O frameworks usually employ busy polling technique. As busy polling will burn all CPU cycles even if there's no packet to process, these frameworks are quite power inefficient. Meanwhile, exploiting power management techniques such as DVFS and LPI in high performance packet I/O frameworks is challenging, because neither the OS nor the frameworks can provide information (e.g., the actual CPU utilization, available idle period, or the target frequency) required by power management techniques. In this paper, we establish an analytical model that can formulate the packet processing flow of high performance packet I/O to help address the above challenges. From the analytical model, we can deduce the actual CPU utilization and average idle period in different traffic load, and gain the insight to choose CPU frequency that can appropriately balance the power consumption and packet latency. Then, we propose two simple but effective approaches to conduct power conservation for high performance packet I/O: one with the aid of traffic information and the other without. Experiments with Intel DPDK show that both approaches can achieve significant power reduction (35.90% and 34.43% on average respectively) while incurring < 1 μs of latency increase." @default.
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- W2885451520 date "2018-08-13" @default.
- W2885451520 modified "2023-09-27" @default.
- W2885451520 title "Power Efficient High Performance Packet I/O" @default.
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- W2885451520 doi "https://doi.org/10.1145/3225058.3225129" @default.
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