Lanbench //free\\ -
is a lightweight, portable network benchmarking utility designed to test the performance of a local area network (LAN) by measuring TCP throughput between two computers. It is particularly favored by network administrators and hardware reviewers for its simplicity and low CPU overhead, which ensures that benchmark results reflect network performance rather than system bottlenecks. Key Features & Capabilities Minimalist Design
LANBench
At its core, is a benchmarking framework designed to test Large Language Models (LLMs) and AI inference servers over a Local Area Network (LAN). Unlike traditional benchmarks that run on the same machine as the model (which can mask network latency and serialization overhead), LANBench simulates real-world client-server architectures. LANBench
- Network Administrators: Useful for diagnosing network performance issues, optimizing network configurations, and ensuring that network upgrades are effective.
- Home Users: Can help in identifying if there are any issues with the home network, or if the network equipment (like routers or switches) is performing as expected.
TCP-Only Testing:
Specifically designed to benchmark TCP performance. including average speed
Test Duration
: Specific time periods for benchmarks (e.g., 10 seconds). round-trip or one-way latency
Benefits of Using LANBench
- Test endpoints are deployed across the LAN (physical hosts, VMs, or containers).
- A controller schedules test scenarios—defining traffic types, rates, packet sizes, duration, and QoS markings.
- Endpoints generate traffic according to scenario parameters; measurements are collected at sender and receiver.
- Results are aggregated to compute throughput, round-trip or one-way latency, jitter, packet loss, and retransmission statistics.
- Reports visualize time-series behavior and summarize per-test metrics and percentiles (e.g., p50, p95, p99 latency).
- One-Click Report: Generate a PDF summary of the test session, including average speed, max speed, and connection stability graphs.
- CSV Export: Export raw time-series data for analysis in Excel or other monitoring tools.