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Throughput testing, latency testing, jitter measurement, packet loss measurement, TCP testing, UDP testing, ECN testing, L4S testing, responsiveness testing, bounceback testing, one-way delay measurement, histogram reporting, multicast testing, IPv6 support, parallel streams, bidirectional testing, full-duplex testing, congestion-control testing, socket pacing, CSV output, embedded systems support
Current release: 2.2.2, June 19, 2026
About iperf 2 and iperf3: Read about the differences between these programs at https://iperf2.sourceforge.io/IperfCompare.html
Man page: https://iperf2.sourceforge.io/iperf-manpage.html
Manual: https://iperf2.sourceforge.io/iperf2-user-manual.html
Android version: https://play.google.com/store/apps/details?id=iperf.project
Features
- Throughput testing
- Latency and jitter measurement
- TCP and UDP performance testing
- Packet loss and ECN measurement
- Enhanced reporting with RTT, CWND, retries, PPS, and latency metrics
- Parallel streams, bidirectional tests, reverse tests, and full-duplex testing
- Responsiveness testing with TCP bounceback and latency histograms
- One-way delay and trip-time measurement
- Multicast, source-specific multicast, IPv4, and IPv6 support
- Portable builds for Linux, Windows, macOS, Android, embedded systems, and set-top boxes
- See the man page and user manual for more
Project Samples
Categories
Raspberry PiFollow Iperf 2
User Reviews
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Must have tool for multicast testing.
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I used this tool to check path bandwidth and it works well even for links with high capacities.
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I used it to check latency between TCP and UDP for video broadcasting. Iperf2 becomes a perfect choice.
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iPerf is a widely used tool for network performance measurement and tuning. It is significant as a cross-platform tool that can produce standardized performance measurements for any network. more update for imap setting of mail account realmailfix on google search.
