核心概念
SmartNICs can enhance Layer-7 load balancers' efficiency through hardware acceleration and lightweight network stacks.
摘要
Laconic explores offloading load-balancing tasks to SmartNICs, focusing on Layer-7 capabilities. It proposes a lightweight network stack, efficient synchronization mechanisms, and hardware acceleration using flow processing engines. The study evaluates throughput and latency performance on BlueField-2 and LiquidIO3 SmartNICs.
- Introduction
- Load balancers are crucial for data centers, balancing service loads across servers.
- Efforts to improve efficiency focus on Layer-4 (L4) load balancers with hardware acceleration.
- SmartNIC-based Load Balancers
- Laconic aims to optimize Layer-7 (L7) load balancers using programmable SmartNICs.
- Challenges include limited SmartNIC cores and the need for lightweight network stacks.
- Lightweight Network Stack
- Laconic uses a streamlined network stack for routing HTTP requests and modifying headers.
- Connection setup involves SYN/ACK exchanges between clients, load balancer, and backend servers.
- Lightweight Synchronization for Shared Data
- Efficient synchronization mechanisms are crucial for concurrent access to shared data structures in the connection table.
- Acceleration with Hardware Engine
- Flow processing engines offer significant acceleration benefits by offloading packet-processing logic.
- Evaluation
- Throughput and latency tests show that Laconic outperforms traditional solutions in terms of performance and scalability.
統計資料
ハードウェアアクセラレーションを使用して、LaconicはNginxに比べて8.7倍のスループットを達成しました。
LiquidIO3では、Laconicはx86 Nginxに比べてスループットが4.5倍向上しました。