Understanding the Micro-Behaviors of Hardware Offloaded Network Stacks with Lumina
Zhuolong Yu, Bowen Su, Wei Bai, Shachar Raindel, Vladimir Braverman, Xin Jin · 2023
Hardware offloaded network stacks are widely adopted in modern datacenters to meet the demand for high throughput, ultra-low latency and low CPU overhead. To fully leverage their exceptional performance, users need to have a deep understanding of their behaviors. Despite many efforts on testing software network stacks, hardware network stacks impose unique challenges to testing tools due to their kernel bypass nature and high performance.