IOzone
title: "IOzone" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["benchmarks-(computing)", "linux-file-system-related-software"] topic_path: "technology/computing" source: "https://en.wikipedia.org/wiki/IOzone" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::data[format=table title="Infobox software"]
| Field | Value |
|---|---|
| name | IOzone |
| logo | |
| screenshot | |
| author | William Norcott |
| developer | Don Capps, et al |
| released | |
| latest release version | 3.507 |
| latest release date | |
| latest preview date | |
| programming language | C |
| language | English |
| genre | Benchmark |
| website | |
| :: |
| name = IOzone | logo = | screenshot = | caption = | collapsible = | author = William Norcott | developer = Don Capps, et al | released = | discontinued = | latest release version = 3.507 | latest release date = | latest preview version = | latest preview date = | programming language = C | operating system = | platform = | size = | language = English | status = | genre = Benchmark | license = | website = IOzone is a file system benchmark utility.{{cite book | last = Olker | first = Dave | title = Optimizing NFS Performance: Tuning and Troubleshooting NFS on HP-UX Systems | edition = 1st | date = 2002-09-13 | publisher = Prentice Hall | location = Upper Saddle River, New Jersey | isbn = 0-13-042816-7 | pages = 24–26 | chapter = Local Filesystem Considerations: iozone | quote = iozone is one of the more sophisticated filesystem performance benchmark utilities available. | url = http://www.linux.com/archive/feature/139744 | title = IOzone for filesystem performance benchmarking | accessdate = 2009-10-15 | last = Martin | first = Ben | date = 2008-07-03 | publisher = Linux.com
Source code is available from iozone.org. It does mmap() file I/O and uses POSIX Threads.
It won the 2007 Infoworld Bossie Awards for Best file I/O tool.{{cite web | url = http://www.infoworld.com/t/storage/best-open-source-in-storage-139?page=0,1 | title = Best of open source in storage | accessdate = 2009-10-15 | last = Venezia | first = Paul | date = 2007-09-10 | work = 2007 InfoWorld Bossie Awards | publisher = InfoWorld | url = http://www.infoworld.com/%5Bprimary-term-alias-prefix%5D/%5Bprimary-term%5D/best-open-source-in-storage-837¤t=6 | title = Best of open source in storage: slide 6 of 7 | accessdate = 2009-10-15 | date = 2007-09-10 | work = 2007 InfoWorld Bossie Awards | publisher = InfoWorld
The Windows version of IOzone uses Cygwin. Builds are available for AIX, BSDI, HP-UX, IRIX, FreeBSD, Linux, OpenBSD, NetBSD, OSFV3, OSFV4, OSFV5, SCO OpenServer, Solaris, Mac OS X, Windows (95/98/Me/NT/2K/XP).
It is available as a test profile in the Phoronix Test Suite.
References
References
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