Flexible IO Tester

Fio is an advanced disk benchmark that depends upon the kernel's AIO access library.

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

Project Site


Test Created

12 September 2017

Last Updated

27 December 2018

Test Maintainer

Michael Larabel 

Test Type


Average Install Time

2 Seconds

Average Run Time

2 Minutes, 17 Seconds


30k+ Downloads

Supported Platforms

Public Result Uploads *Reported Installs **Reported Test Completions **Test Profile Page Views ***OpenBenchmarking.orgEventsFlexible IO Tester Popularity Statisticssystem/fio2017.092017.112018.012018.032018.052018.072018.092018.112019.012019.032019.052019.072019.092019.112020.012020.032020.052020.072020.092020.112021.012021.032021.052021.072021.092021.112022.012022.032022.052022.072022.092022.1120K40K60K80K100K
* Uploading of benchmark result data to OpenBenchmarking.org 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 OpenBenchmarking.org 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 30 November 2022.
Random Read35.2%Sequential Write30.0%Sequential Read34.8%Type Option PopularityOpenBenchmarking.org
Linux AIO46.5%POSIX AIO35.2%Sync18.3%IO Engine Option PopularityOpenBenchmarking.org
Yes47.3%No52.7%Buffered Option PopularityOpenBenchmarking.org
No93.0%Yes7.0%Direct Option PopularityOpenBenchmarking.org
512KB9.4%4KB84.0%4MB6.6%Block Size Option PopularityOpenBenchmarking.org

Revision History

system/fio-1.9.5   [View Source]   Thu, 27 Dec 2018 17:17:59 GMT
Fix XML generation.

system/fio-1.9.4   [View Source]   Thu, 27 Dec 2018 16:59:55 GMT
Fix case sensitivity from previous upload.

system/fio-1.9.3   [View Source]   Thu, 27 Dec 2018 16:56:31 GMT
Generalize the BSD check to use OS_TYPE = BSDD, allows test to work fine then on DragonFlyBSD.

system/fio-1.9.2   [View Source]   Sat, 01 Dec 2018 08:54:36 GMT
Correction for previous upload.

system/fio-1.9.1   [View Source]   Sat, 01 Dec 2018 08:33:54 GMT
Fixes for BSD/FreeBSD support - https://github.com/phoronix-test-suite/test-profiles/pull/41

system/fio-1.9.0   [View Source]   Tue, 12 Sep 2017 16:19:55 GMT
Initial commit of a system-provided fio disk test

Performance Metrics

This test profile does not have enough data available on OpenBenchmarking.org yet to provide any detailed metrics.