Maximizing 40G NIC Performance on Linux with Intel XL710 and Cisco Nexus Switches
In this comprehensive technical walkthrough, I’ll take you through a real-world journey of troubleshooting and tuning a high-performance 40 Gbit Ethernet setup using Intel XL710 network cards connected through a Cisco Nexus 3064 switch. The goal was simple but challenging: to achieve near line-rate performance using iperf3 between two Linux (Proxmox) systems. When I first started testing …
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