| Metric | Virtual Adapter (VMXNET3) | Physical 1GbE NIC | |----------------------|---------------------------|--------------------| | Max throughput | ~9–10 Gbps (on 10G host) | ~1 Gbps | | CPU usage (iperf3) | 10–15% per core | 1–3% per core | | Avg latency (ping) | 0.3–0.8 ms (host→VM) | 0.1–0.3 ms |
: The operating system's kernel manages a "network stack" that routes data to these virtual interfaces just as it would to a physical Ethernet port. virtual network adaptor
A virtual network adapter is a software-based interface that allows a device to communicate with other computers or networks without needing a physical hardware card. Depending on your needs, you can create one for the host operating system (loopback) or for a specific virtual machine (VM). 1. Creating a Loopback Adapter (Windows Host) | Metric | Virtual Adapter (VMXNET3) | Physical
: Choose Microsoft KM-TEST Loopback Adapter (or "Microsoft Loopback Adapter" on older systems) and click Next until the process finishes. 2. Creating an Adapter in VirtualBox Creating an Adapter in VirtualBox