IOzone

The IOzone benchmark tests the hard disk drive / file-system performance.

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

Use with caution this test profile is currently marked Deprecated.

Project Site

iozone.org

Test Created

6 December 2010

Last Updated

8 May 2020

Test Maintainer

Michael Larabel 

Test Type

Disk

Average Install Time

9 Seconds

Average Run Time

33 Minutes, 40 Seconds

Test Dependencies

C/C++ Compiler Toolchain

Accolades

250k+ Downloads + 20k+ Public Benchmark Results

Supported Platforms


Public Result Uploads *Reported Test Completions **Reported Installs **Test Profile Page Views ***OpenBenchmarking.orgEventsIOzone Popularity Statisticspts/iozone2010.122011.052011.102012.032012.082013.012013.062013.112014.042014.092015.022015.072015.122016.052016.102017.032017.082018.012018.062018.112019.042019.092020.022020.072020.122021.052021.102022.032022.082023.012023.062023.11160K320K480K640K800K
* 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 updated weekly as of 19 February 2024.
4Kb34.0%2MB5.2%1MB32.1%64Kb28.6%Record Size Option PopularityOpenBenchmarking.org
512MB35.1%4GB19.3%8GB21.3%2GB24.3%File Size Option PopularityOpenBenchmarking.org
Read Performance48.3%Write Performance51.7%Disk Test Option PopularityOpenBenchmarking.org

Revision History

pts/iozone-1.9.6   [View Source]   Fri, 08 May 2020 20:00:01 GMT
Fix https://github.com/phoronix-test-suite/test-profiles/issues/139 and mark test profile as deprecated.

pts/iozone-1.9.5   [View Source]   Fri, 07 Dec 2018 12:04:58 GMT
Add FreeBSD support https://github.com/phoronix-test-suite/test-profiles/pull/51

pts/iozone-1.9.4   [View Source]   Sat, 07 Apr 2018 20:36:24 GMT
Iozone doesn't work right on BSD out-of-the-box.

pts/iozone-1.9.3   [View Source]   Wed, 28 Feb 2018 17:04:31 GMT
Use the Windows zip package.

pts/iozone-1.9.2   [View Source]   Wed, 28 Feb 2018 17:02:42 GMT
Set the Windows bit.

pts/iozone-1.9.1   [View Source]   Wed, 28 Feb 2018 17:01:40 GMT
Restore Windows support for iozone.

pts/iozone-1.9.0   [View Source]   Wed, 28 Jun 2017 13:33:12 GMT
Fix result parser, update against latest upstream

pts/iozone-1.8.0   [View Source]   Sun, 29 Apr 2012 12:10:47 GMT
Update against upstream IOzone 3.405 and also set -e argument to ensure fsync/flushes are done as part of timing.

pts/iozone-1.7.0   [View Source]   Mon, 06 Dec 2010 14:53:27 GMT
Initial import into OpenBenchmarking.org


Performance Metrics

Analyze Test Configuration:

IOzone 3.465

Record Size: 4Kb - File Size: 512MB - Disk Test: Write Performance

OpenBenchmarking.org metrics for this test profile configuration based on 2,499 public results since 28 June 2017 with the latest data as of 19 February 2024.

Below is an overview of the generalized performance for components where there is sufficient statistically significant data based upon user-uploaded results. It is important to keep in mind particularly in the Linux/open-source space there can be vastly different OS configurations, with this overview intended to offer just general guidance as to the performance expectations.

Component
Percentile Rank
# Compatible Public Results
MB/s (Average)
97th
4
1008 +/- 83
95th
5
940 +/- 61
95th
14
927 +/- 25
90th
3
713 +/- 26
86th
47
570 +/- 36
85th
3
558 +/- 72
81st
3
480 +/- 3
79th
4
434 +/- 20
Mid-Tier
75th
< 392
68th
3
280 +/- 20
66th
13
255 +/- 1
61st
4
216 +/- 12
56th
9
155 +/- 8
53rd
8
127 +/- 4
Median
50th
110
33rd
228
59 +/- 5
33rd
3
58 +/- 1
Low-Tier
25th
< 47
19th
3
25 +/- 1
15th
3
12 +/- 1
15th
4
11
5th
3
1
OpenBenchmarking.orgDistribution Of Public Results - Record Size: 4Kb - File Size: 512MB - Disk Test: Write Performance2499 Results Range From 0 To 5028 MB/s1012023034045056067078089091010111112121313141415151616171718181919202021212222232324242525262627272828292930303131323233333434353536363737383839394040414142424343444445454646474748484949505030060090012001500

Based on OpenBenchmarking.org data, the selected test / test configuration (IOzone 3.465 - Record Size: 4Kb - File Size: 512MB - Disk Test: Write Performance) has an average run-time of 6 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 BenchmarkRecord Size: 4Kb - File Size: 512MB - Disk Test: Write PerformanceRun-Time20406080100Min: 1 / Avg: 6.33 / Max: 124

Based on public OpenBenchmarking.org results, the selected test / test configuration has an average standard deviation of 3.6%.

OpenBenchmarking.orgPercent, Fewer Is BetterAverage Deviation Between RunsRecord Size: 4Kb - File Size: 512MB - Disk Test: Write PerformanceDeviation612182430Min: 0 / Avg: 3.64 / Max: 25

Tested CPU Architectures

This benchmark has been successfully tested on the below mentioned architectures. The CPU architectures listed is where successful OpenBenchmarking.org 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
x86_64
(Many Processors)
IBM POWER (PowerPC) 64-bit
ppc64le
POWER9 80-Core
Intel / AMD x86 32-bit
i686
(Many Processors)
ARMv7 32-bit
armv7l
ARMv7 Cortex-A15 8-Core, ARMv7 Cortex-A53 4-Core, ARMv7 Cortex-A72 4-Core, ARMv7 rev 1 4-Core, ARMv7 rev 2, ARMv7 rev 2 2-Core, ARMv7 rev 3 4-Core, ARMv7 rev 3 8-Core, ARMv7 rev 4 4-Core
ARMv6 32-bit
armv6l
ARMv6-compatible rev 7
ARMv8 64-bit
aarch64
AArch64 rev 4, ARMVv8 Cortex-A72 6-Core, ARMv8 Cortex-A53 24-Core, ARMv8 Cortex-A53 4-Core, ARMv8 Cortex-A55 4-Core, ARMv8 Cortex-A57 4-Core, ARMv8 Cortex-A72 6-Core, ARMv8 Neoverse-N1 16-Core, ARMv8 rev 0 6-Core, Ampere ARMv8 Neoverse-N1 160-Core, Ampere eMAG ARMv8 32-Core, Phytium D2000, Rockchip ARMv8 Cortex-A53 4-Core, Rockchip ARMv8 Cortex-A76 4-Core, SiFive RISC-V

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