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- W4205123077 abstract "As one of the most critical cloud services, Bare-Metal Servers (BMS) introduce stringent performance requirements on data center networks (DCN). Stateful packet filter is an integral DCN component of ensuring connection security for BMS. However, the off-the-shelf stateful packet filters either are costly for cloud DCNs or introduce significant performance bottlenecks. In this article, we present <i>CoFilter</i> , which leverages low-cost programmable switches to accelerate the stateful packet filter for BMS. <i>CoFilter</i> uses (1) <i>stateful process partition</i> to enable complex stateful packet filtering logic on programmability-limited switching ASICs, (2) <i>state compression</i> to track tens of millions of connections with constrained hardware memory, and (3) <i>per-tenant packet rate limit and tenant-aware flow migration</i> to achieve efficient performance isolation among different tenants. Overall, <i>CoFilter</i> implements a high-performance stateful packet filter via the co-design of programmable switching ASIC and CPU. We evaluate <i>CoFilter</i> under various data center traffic traces with real-world flow distributions. The evaluation results show that <i>CoFilter</i> remarkably outperforms NetFilter, i.e., forwarding packets at line rate (13x throughput of NetFilter), keeping packet delay within 1us, and freeing a significant quantity of CPU cores, with rather small memory usage, i.e., accommodating over <inline-formula><tex-math notation=LaTeX>$10^7$</tex-math></inline-formula> connections with only 16MB SRAM." @default.
- W4205123077 created "2022-01-26" @default.
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- W4205123077 date "2022-09-01" @default.
- W4205123077 modified "2023-10-18" @default.
- W4205123077 title "CoFilter: High-Performance Switch-Accelerated Stateful Packet Filter for Bare-Metal Servers" @default.
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- W4205123077 doi "https://doi.org/10.1109/tpds.2021.3136575" @default.
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