nuttcp
TLDR
Start server
$ nuttcp -S
Test throughput to server$ nuttcp [server_ip]
Test UDP throughput$ nuttcp -u [server_ip]
Specify bandwidth limit$ nuttcp -R [100M] [server_ip]
Test for specific duration$ nuttcp -T [30] [server_ip]
Bidirectional test$ nuttcp -r [server_ip]
SYNOPSIS
nuttcp [options] [host]
DESCRIPTION
nuttcp is a network performance measurement tool. It measures TCP and UDP throughput between systems, providing detailed statistics about network performance.
nuttcp is similar to iperf but with some different features and reporting format.
PARAMETERS
-S
Server mode.-u
UDP mode (default TCP).-R rate
Rate limit (K, M, G).-T time
Test duration.-t
Transmitter mode.-r
Receiver mode.-p port
Data port.-P port
Control port.-w size
Window size.
EXAMPLE OUTPUT
$ 84.8594 MB / 10.00 sec = 71.1477 Mbps 0 retrans
CAVEATS
Requires server on remote end. Firewall must allow ports. UDP tests may show packet loss. Results affected by other traffic.
HISTORY
nuttcp was developed by Bill Fink at NLANR/DAST as a network testing tool, building on the earlier ttcp.
