Achieving 48.7 Gbit/s with LACP Bonds
After weeks of tweaking, I finally hit 48.7 Gbit/s throughput on my 50Gbit LACP bonds. Here’s the secret sauce.
The key optimizations were:
- Jumbo frames (MTU 9000) end-to-end
- Disabled flow control on all interfaces
- TCP buffer tuning in sysctl
The Mellanox ConnectX-4 cards are beasts, but they need proper configuration to shine.