Netperf establishes its initial control connection over TCP port 12865 . You can verify if the remote server is listening using nc (netcat) or telnet : nc -zvw3 remote_server_ip 12865 Use code with caution.
Do you need to test , UDP (packet loss/jitter) , or Request/Response (latency) metrics?
However, unlike modern alternatives like Speedtest.net, Netperf operates on a strict client-server model. To measure your network performance, you cannot just click "Go"—you need a running instance of netserver (the Netperf daemon) on the remote end.
Academic networks like Internet2 or ESnet maintain performance test nodes, though access is often restricted to institutional traffic.
: Visit the public perfSONAR tools directory or look up the ESnet (Energy Sciences Network) public measurement nodes. netperf server list verified
Because Netperf is often used via the Flent wrapper tool (which uses Netperf for benchmarking), you can find active servers through Flent-related communities:
This test measures bulk data transfer speed from your client to the verified server. It runs for a default of 10 seconds. netperf -H -t TCP_STREAM Use code with caution. 2. TCP Request/Response Test (Latency / Transaction Rate)
If you find a server IP or hostname on a forum or an old list, do not assume it works. You can verify it yourself using the netperf command-line tool.
🟢 OPERATIONAL Message: netperf server list verified Netperf establishes its initial control connection over TCP
Public servers suffer from high congestion, meaning your test results reflect their heavy load rather than your actual network performance. Where to Find Verified Infrastructure
If you are affiliated with an academic institution, GENI and PlanetLab provide access to hundreds of nodes globally that have Netperf pre-installed for educational research.
Public netperf servers are a shared resource. To ensure they remain available for everyone:
Occasionally maintained by contributors. However, unlike modern alternatives like Speedtest
: iperf.he.net (Hurricane Electric), located in California.
netperf -H netperf.tuwien.ac.at -t TCP_STREAM -- -m 1400 -l 60 Use code with caution. How to Verify a Netperf Server Yourself
To fix this on a verified server, restrict the test to a specific data port that you know is open: netperf -H -L ,12866 Use code with caution.
No background cron jobs, updates, or other users are consuming CPU cycles.
One of the most reliable, long-running public servers. IP: netperf.tuwien.ac.at Usage: Excellent for European latency/throughput tests.
NET-8442-V Module: Network Performance Monitor Severity: Informational Timestamp: 2023-10-27T14:05:00Z