Nuttcp is a network performance measurement tool intended for use by network and system managers. Its most basic usage is to determine the raw TCP (or UDP) network layer throughput by transferring memory buffers from a source system across an interconnecting network to a destination system, either transferring data for a specified time interval, or alternatively transferring a specified number of bytes.

This test profile automates the testing of a Nuttcp client. Ensure you have a suitable Nuttcp server [] running on your network prior to running this test profile.

To run this test with the Phoronix Test Suite, the basic command is: phoronix-test-suite benchmark nuttcp.

Project Site

Test Created

3 January 2019

Last Updated

22 January 2019

Test Maintainer

Michael Larabel 

Test Type


Average Install Time

12 Seconds

Average Run Time

3 Minutes, 11 Seconds

Test Dependencies

C/C++ Compiler Toolchain


20k+ Downloads

Supported Platforms

Public Result Uploads *Reported Installs **Reported Test Completions **Test Profile Page Views ***OpenBenchmarking.orgEventsNuttcp Popularity Statisticspts/nuttcp2019.012019.022019.032019.042019.052019.062019.072019.082019.092019.102019.112019.122020.012020.022020.032020.042020.052020.062020.082020.092020.102020.112020.122021.012021.022021.032021.042021.052021.062021.072021.082021.092021.102021.112021.122022.012022.022022.032022.042022.052022.062022.072022.082022.09400800120016002000
* Uploading of benchmark result data to is always optional (opt-in) via the Phoronix Test Suite for users wishing to share their results publicly.
** Data based on those opting to upload their test results to and users enabling the opt-in anonymous statistics reporting while running benchmarks from an Internet-connected platform.
*** Test profile page view reporting began March 2021.
Data current as of 28 September 2022.
TCP Transfer67.0%10G+ UDP33.0%Test Option Address Option

Revision History

pts/nuttcp-1.0.3   [View Source]   Tue, 22 Jan 2019 14:40:39 GMT
Fix for previous upload

pts/nuttcp-1.0.2   [View Source]   Tue, 22 Jan 2019 05:27:25 GMT
Use gmake when building on BSD, allows the test to work fine on FreeBSD, etc.

pts/nuttcp-1.0.1   [View Source]   Sat, 12 Jan 2019 07:43:37 GMT
Nuttcp builds fine on Windows.

pts/nuttcp-1.0.0   [View Source]   Thu, 03 Jan 2019 14:33:40 GMT
Initial commit of nuttcp network benchmark.

Performance Metrics

Analyze Test Configuration:

Nuttcp 8.1.4

Test: TCP Transfer - Default - Server Address: metrics for this test profile configuration based on 36 public results since 11 January 2019 with the latest data as of 25 January 2019.

Additional benchmark metrics will come after has collected a sufficient data-set.

OpenBenchmarking.orgDistribution Of Public Results - Test: TCP Transfer - Default - Server Address: Results Range From 934 To 9458 Mbits/sec93411051276144716181789196021312302247326442815298631573328349936703841401241834354452546964867503852095380555157225893606462356406657767486919709072617432760377747945811682878458862988008971914293139484246810

Based on data, the selected test / test configuration (Nuttcp 8.1.4 - Test: TCP Transfer - Default - Server Address: has an average run-time of 2 minutes. By default this test profile is set to run at least 3 times but may increase if the standard deviation exceeds pre-defined defaults or other calculations deem additional runs necessary for greater statistical accuracy of the result.

OpenBenchmarking.orgMinutesTime Required To Complete BenchmarkTest: TCP Transfer - Default - Server Address: 2 / Avg: 2 / Max: 2

Based on public results, the selected test / test configuration has an average standard deviation of 0.3%.

OpenBenchmarking.orgPercent, Fewer Is BetterAverage Deviation Between RunsTest: TCP Transfer - Default - Server Address: 0 / Avg: 0.31 / Max: 1

Tested CPU Architectures

This benchmark has been successfully tested on the below mentioned architectures. The CPU architectures listed is where successful result uploads occurred, namely for helping to determine if a given test is compatible with various alternative CPU architectures.

CPU Architecture
Kernel Identifier
Verified On
Intel / AMD x86 64-bit
(Many Processors)