9/26 Efficient SmartNIC offload to accelerate PM-based distributed file system (권영진 교수/KAIST 전산학부)

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kaistsoftware
작성일
2022-09-22 15:24
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4281
  • 강사 : 권영진 교수 (KAIST 전산학부)
  • 일시 : 2022. 9. 26 (월) 16:00~17:30
In multi-tenant systems, the CPU overhead of distributed file systems (DFSes) is becoming an increasing burden to application performance. CPU and memory interference cause degraded and unstable application and storage performance, in particular for operation latency. Recent client-local DFSes for persistent memory (PM) accelerate this trend. DFS offload to SmartNICs is a promising solution to these problems, but it is challenging to fit the complex demands of a DFS into simple SmartNIC processors located across PCIe.

This talk presents LineFS, a SmartNIC-offloaded, high-performance DFS with support for client-local PM. To fully leverage the SmartNIC architecture, we decompose DFS operations into execution stages that can be offloaded to a parallel datapath execution pipeline on the SmartNIC. LineFS offloads CPU-intensive DFS tasks, like replication, compression, data publication, index, and consistency management to a Smart-NIC. We implement LineFS on the Mellanox BlueField Smart-NIC and compare it to Assise, a state-of-the-art PM DFS. LineFS improves latency in LevelDB up to 80% and throughput in Filebench up to 79%, while providing extended DFS availability during host system failures.
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