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perfSonar

Network Diagnostics and Benchmarking.

NDT Speed Test

The Network Diagnostic Tool (NDT) provides a sophisticated speed and diagnostic test. An NDT test reports more than just the upload and download speeds - it also attempts to determine what, if any, problems limited these speeds, differentiating between computer configuration and network infrastructure problems. While the diagnostic messages are most useful for expert users, they can also help novice users by allowing them to provide detailed trouble reports to their network administrator.

BETA Notice

This speed test uses new HTML5 Websockets and Workers technology. Due to the nature of HTML support in various web browsers, the results determined by this test will likely be lower than expected.

0.0
mb/s
0.0
mb/s

Server:

Network latency: 0.0 msec round trip time

Jitter: 0.0 msec

System Environment

Your System
Plugin Version

Test Details

TCP Receive Window Current
TCP Receive Window Max
TCP Timeouts
Packet Loss %
Round Trip Time Min
Round Trip Time Max
Round Trip Time Avg
Jitter
Selective Acks

Diagnosis

Duplex Mismatch
Cable Fault
Congestion
Client/Server State
Receive Buffer Wait
Optimal Receive Buffer
Bottleneck Link
Duplicate Acks