Serial Loopback Test

This test will do a simple write/read test on all detected serial interfaces. For this test to work, the relevant serial ports should have a serial loopback plug or have otherwise wired the appropriate pins.

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

Test Created

5 October 2015

Last Updated

9 October 2015

Test Maintainer

Michael Larabel 

Test Type



60k+ Downloads

Supported Platforms

Public Result Uploads *Reported Installs **Reported Test Completions **Test Profile Page Views ***OpenBenchmarking.orgEventsSerial Loopback Test Popularity Statisticspts/serial-loopback2015.102015.122016.022016.042016.062016.082016.102016.122017.022017.042017.062017.082017.102017.122018.022018.042018.062018.082018.102018.122019.022019.042019.062019.082019.102019.122020.022020.042020.062020.082020.102020.122021.022021.042021.062021.08400800120016002000
* 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 23 September 2021.

Revision History

pts/serial-loopback-1.0.2   [View Source]   Fri, 09 Oct 2015 10:43:37 GMT
Fix exit check, ensure bash is used for the script

pts/serial-loopback-1.0.1   [View Source]   Fri, 09 Oct 2015 10:33:09 GMT
Add RequiresRoot, try to better catch errors.

pts/serial-loopback-1.0.0   [View Source]   Mon, 05 Oct 2015 14:17:42 GMT
Initial commit of test profile.

Performance Metrics

This test profile is too new - it does not have enough data available on yet to provide any detailed metrics.

Recent Test Results Results Compare

1 System - 3 Benchmark Results

AMD Ryzen 9 3950X 16-Core - ASUS ROG CROSSHAIR VIII HERO - AMD Starship

Ubuntu 19.10 - 5.6.0-050600rc3-generic - GNOME Shell 3.34.1

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