IPerf2 VS Ethr

• Bandwidth Measurement
  IPerf2 provides accurate bandwidth measurement for TCP and UDP, helping users assess the maximum network throughput achievable between client and server.
• Cross-Platform Compatibility
  It is compatible with various operating systems, including Windows, Linux, and macOS, making it a versatile tool for network testing across different environments.
• Open Source
  IPerf2 is open-source, allowing users to modify and optimize the software to suit their specific network testing needs or contribute to its development.
• Comprehensive Testing Features
  It supports various testing scenarios, such as multicast and unicast testing, providing users with a broad scope for network performance evaluation.
• Ease of Use
  The software offers a straightforward command-line interface, which facilitates easy setup and execution of network performance tests.

Possible disadvantages

• Network Intrusiveness
  IPerf2 can generate significant network traffic during testing, which might interfere with normal network operations and lead to inaccurate results if not managed properly.
• No Graphical User Interface
  The lack of a built-in graphical user interface can be a drawback for users who prefer visual tools over command-line operations, limiting its accessibility to non-technical users.
• Limited Protocol Support
  While IPerf2 supports TCP and UDP, it does not cover other network protocols like HTTP or FTP, which might be necessary for a comprehensive performance analysis in some cases.
• Potential Stability Issues
  As an open-source project, updates and patches might not be as frequent or robust as those for commercial software, potentially leading to stability issues.
• Tunneling and VPN Limitations
  IPerf2 may not measure performance accurately when dealing with complex network configurations involving tunneling or VPNs, requiring additional configuration for accurate testing.

• Cross-platform support
  Ethr is a cross-platform network performance measurement tool that works on Windows, Linux, and macOS, making it versatile for diverse environments and allowing consistent testing across different operating systems.
• Multiple protocol support
  Ethr supports testing with TCP, UDP, HTTP, HTTPS, and ICMP protocols, providing comprehensive network performance measurement capabilities covering bandwidth, connections/s, packets/s, latency, and more.
• Easy to use
  Ethr features a simple command-line interface with straightforward server/client modes, making it easy for users to quickly set up and run network performance tests without complex configuration.
• Built by Microsoft and open source
  Being developed by Microsoft and released as an open-source project under the MIT license, Ethr benefits from credible engineering backing while remaining freely available for anyone to use, modify, and contribute to.
• Lightweight and written in Go
  Ethr is written in Go, which means it compiles to a single binary with no external dependencies, making it extremely easy to deploy and run on target machines without needing to install runtimes or libraries.

Possible disadvantages

• Limited community and maintenance
  The GitHub repository has seen reduced activity and fewer updates in recent years, raising concerns about long-term maintenance, bug fixes, and the addition of new features compared to more actively maintained alternatives like iperf3.
• Less mature than alternatives
  Compared to well-established tools like iperf3 or netperf, Ethr has a smaller user base, fewer real-world deployment examples, and less community-contributed documentation and troubleshooting resources.
• Limited advanced features
  Ethr lacks some advanced features found in competing tools, such as detailed jitter analysis, advanced traffic shaping options, or extensive output formatting and integration capabilities for automated monitoring pipelines.
• Sparse documentation
  The official documentation and usage guides are relatively minimal, which can make it challenging for users to explore advanced use cases or troubleshoot issues beyond basic testing scenarios.
• Limited reporting and visualization
  Ethr provides basic text-based output and a simple built-in UI, but lacks built-in support for exporting results to common formats like JSON/CSV or integration with visualization and monitoring tools for deeper analysis.

iPerf2 vs iPerf3 | Panos Vouzis | WLPC Phoenix 2020

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• WAN circuit testing

  I think such a tool is fairly straightforward to develop with iperf 2 as the underlying src/sink. The man page has new features including start times & permit keys. Active, low duty-cycle, low impact telemetry has been a goal. The idea... Source: almost 4 years ago

• WAN circuit testing

  Iperf 2 can help and has many new tests including one way delay, low duty cycle burst, tcp bouncback, etc. More on the man page. OWD does required clock sync. Source: almost 4 years ago

• Is iPerf test an officially approved RFC 2544 test?

  A bit of a tangent, but there are a lot of new features in iperf 2, much are around latency or one way delay (OWD). Many times these days it's latency that affects the quality of experience to end users. Source: over 4 years ago

Tracking Ethr since May 2026.