Iometer

Free plan LinuxMacWindows

What Iometer is

Iometer is a free I/O subsystem measurement and characterization tool for single systems and clusters. It covers storage I/O and network I/O, with custom test profiles, command-line or automation use, and CSV result export. In the Windows interface, Access Specifications define workload settings, while project screenshots show workload configuration, running stress tests, and a tachometer display. The software has two required components: Iometer and Dynamo. Iometer itself runs in a Windows environment, while the installation notes list Dynamo for Windows, Linux, Solaris, Mac OS X, and NetWare. SourceForge lists version 1.1.0 Windows installers and binaries, documentation, and source downloads. The executables use the Intel Open Source License; the iomtr_kstat kernel module uses the GNU Public License. A known-issues page documents workarounds, including Linux and Solaris segmentation-fault cases. The project directs installation or compilation questions to its mailing list.

Who it suits

It suits developers, IT users, science and research users, and system administrators who need configurable I/O workloads. It is also relevant when tests must run through automation and produce CSV files.

What it does well

Free plan
Custom test profiles
Command-line or automation support
CSV result export
Storage and network I/O workloads

What to know first

Two components must be installed
Iometer itself runs in Windows
Known Linux and Solaris issues

Verdict

Iometer combines configurable storage and network workloads with automation and CSV output. Check the component setup, Windows interface requirement, and documented platform issues before using it.

Facts from Iometer's own pages

Additional component license: The iomtr_kstat kernel module is distributed under the GNU Public License. · iometer.org, 11 Oct 2026
Component license: The iomtr_kstat kernel module and other future independent components are distributed under the GNU Public License. · iometer.org, 11 Oct 2026
Components: Iometer has two major components, Iometer and Dynamo, and both need to be installed. · github.com, 11 Oct 2026
Development: The project says it is driven by an international group of individuals who improve and port the product. · iometer.org, 11 Oct 2026
Downloads: SourceForge lists version 1.1.0 Windows installers and binaries, documentation, and source downloads. · sourceforge.net, 11 Oct 2026
Intended audience: SourceForge lists developers, IT users, science and research users, and system administrators as the intended audience. · sourceforge.net, 11 Oct 2026
Known issues: The project maintains a known-issues page with workarounds, including an issue where Dynamo on Linux with glibc 2.3 or higher may segfault after a test. · iometer.org, 11 Oct 2026
License: The Iometer and Dynamo executables are distributed under the Intel Open Source License. · iometer.org, 11 Oct 2026
Linux support: The project's known issues page documents Dynamo issues on Linux, including an IA32 segmentation fault with Red Hat 9. · iometer.org, 11 Oct 2026
Origin: Iometer was originally developed by Intel and announced at the Intel Developers Forum on February 17, 1998. · iometer.org, 11 Oct 2026
Platform support: The installation notes say Dynamo runs on Windows, Linux, Solaris, Mac OS X, and Netware; Iometer itself runs in a Windows environment. · github.com, 11 Oct 2026
Project history: After Intel discontinued work on Iometer, it was given to the Open Source Development Lab; the project was registered at SourceForge in November 2001. · iometer.org, 11 Oct 2026
Purpose: Iometer is an I/O subsystem measurement and characterization tool for single and clustered systems. · iometer.org, 11 Oct 2026
Solaris support: The known issues page documents a Dynamo segmentation fault on Solaris/SPARC when multiple swap devices are configured. · iometer.org, 11 Oct 2026
Support: The installation notes direct users with installation or compilation problems to the iometer-user mailing list. · github.com, 11 Oct 2026
Test results: The project’s screenshots show results and a tachometer during a running stress test. · iometer.org, 11 Oct 2026
Windows interface: The project describes screenshots of its native Windows GUI, including workload configuration and running stress tests. · iometer.org, 11 Oct 2026
Workload setup: The Windows GUI includes Access Specifications for defining the workload. · iometer.org, 11 Oct 2026