Tool for measuring file system performance and analyzing storage subsystem capabilities with accurate and detailed results.
IOzone is a freeware filesystem benchmarking app and benchmarker, developed by Capps for Windows.
The download has been tested by an editor here on a PC and a list of features has been compiled; see below. We've also created some screenshots of IOzone to illustrate the user interface and show the overall usage and features of this filesystem benchmarking program.
A file I/O benchmark tool testing write, reader, backwards, etc
IOzone is useful for performing a broad filesystem analysis of a vendor's computer platform.
The benchmark tests file I/O performance for the following operations: Read, write, re-read, re-write, read backwards, read strided, fread, fwrite, random read, pread ,mmap, aio_read, aio_write.
By using IOzone to get a broad filesystem performance coverage the buyer is much more likely to see any hot or cold spots and pick a platform and operating system that is more well balanced.
While computers are typically purchased with an application in mind it is also likely that over time the application mix will change. Many vendors have enhanced their operating systems to perform well for some frequently used applications.
Although this accelerates the I/O for those few applications it is also likely that the system may not perform well for other applications that were not targeted by the operating system. An example of this type of enhancement is: Database.
Many operating systems vendors have tested and tuned the filesystem so it works well with databases. While the database users are happy, the other users may not be so happy as the entire system may be giving all of the system resources to the database users at the expense of all other users.
As time rolls on the system administrator may decide that a few more office automation tasks could be shifted to this machine.
Features of IOzone
- Analyze Results: Graphs help users to analyze test results.
- Benchmarking: Compares system performance to other systems.
- Customizable Tests: Define custom tests and modify existing tests.
- Data Integrity Verification: Ensures the accuracy of read and write operations.
- Durability Testing: Tests system resilience to data corruption.
- File System I/O Testing: Allows users to perform file system I/O tests.
- File System Support: Supports multiple file systems including NFS, CIFS and EXT4
- Flexible Output: Outputs in multiple formats, including CSV, XML and HTML.
- Flexible Workloads: Configurable workloads for testing.
- Multi-Threaded: Tests performance in multi-threaded environments.
- Multiple Tests: Supports multiple simultaneous tests.
- Reporting: Generates detailed reports to review results.
- Test Modes: Offers multiple test modes such as write, read, re-read and random read/write.
- Test Parameters: Allows users to configure several parameters, such as I/O size and number of threads.
- Various File Sizes: Tests performance on files of different sizes.
Compatibility and License
IOzone is provided under a freeware license on Windows from benchmark software with no restrictions on usage. Download and installation of this PC software is free and 3.483 is the latest version last time we checked.
What version of Windows can IOzone run on?
IOzone can be used on a computer running Windows 11 or Windows 10. Previous versions of the OS shouldn't be a problem with Windows 8 and Windows 7 having been tested. It runs on both 32-bit and 64-bit systems with no dedicated 64-bit download provided.
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