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SSD Benchmark

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What SSD Benchmark is

SSD Benchmark is a free command-line utility for measuring disk write performance. It writes random 8 MB chunks sequentially until 1 GB has been written, repeats that workload for eight cycles, and records timing and throughput. Output includes write throughput and IOPS, along with minimum, maximum, mean, and standard deviation for cycle timing. By default, it tests the disk associated with the current working directory; `-d` or `--directory` selects another directory. The `--block-size` option changes the chunk size from the documented 8 MB default. The project lists Linux, macOS, and Windows support, with binaries for Apple Silicon and Intel macOS, ARM64 and x64 Windows, and ARM64 and x64 MUSL Linux. Installation methods include Docker, Homebrew, Snap, and Cargo. The repository identifies a GPL-3.0 license. This tool has one stated purpose: sequential disk-write measurement. It does not run random I/O tests, and feature requests go through GitHub issues.

Who it suits

It suits command-line users checking sequential write performance on Linux, macOS, or Windows. It is useful when throughput, IOPS, and cycle timing statistics are needed.

What it does well

  • Measures sequential write performance
  • Reports throughput and IOPS
  • Configurable target directory
  • Adjustable block size
  • Multiple installation methods

What to know first

  • Only measures disk writes
  • No random I/O tests
  • Command-line interface required
  • GPL-3.0 license

Limits

The tool's purpose is limited to measuring disk write performance with sequential tests. It does not run random I/O tests.

Getting started

  1. Install through Docker, Homebrew, Snap, or Cargo
  2. Run the command-line benchmark in the directory you want to measure
  3. Use `-d` or `--directory` to select another directory
  4. Set `--block-size` if you want a value other than 8 MB
  5. Review throughput, IOPS, and cycle timing statistics

Verdict

SSD Benchmark is a narrowly focused utility for repeatable sequential write measurements, with configurable location and block size. Choose it when write performance is the specific metric needed rather than a broader storage test.

Questions

Is SSD Benchmark free?

Yes. The project lists a free plan.

Which platforms are supported?

SSD Benchmark supports Linux, macOS, and Windows. Listed binaries cover Apple Silicon and Intel macOS, ARM64 and x64 Windows, and ARM64 and x64 MUSL Linux.

What does the benchmark measure?

It measures sequential disk-write performance, reporting throughput, IOPS, and cycle timing statistics.

Can I choose the directory or block size?

Yes. Use `-d` or `--directory` for the target directory and `--block-size` to change the chunk size from 8 MB.

How can I install it?

The README lists Docker, Homebrew, Snap, and Cargo installation methods.

Facts from SSD Benchmark's own pages

Audience
The project describes itself as a simple command-line disk benchmark tool. · github.com, 8 Oct 2026
Block size
The `--block-size` option changes the block size; the documented default is 8 MB. · github.com, 8 Oct 2026
Block size option
Users can set the block size with --block-size; the documented default is 8 MB. · github.com, 8 Oct 2026
Directory option
The -d or --directory option lets users choose the directory to test. · github.com, 8 Oct 2026
Download platforms
The latest listed release provides binaries for Apple Silicon and Intel macOS, ARM64 and x64 Windows, and ARM64 and x64 MUSL Linux. · github.com, 8 Oct 2026
Install options
The README lists Docker, Homebrew, Snap, and Cargo installation methods. · github.com, 8 Oct 2026
Intended audience
The README presents it as a command-line disk benchmark for users checking disk write performance on macOS and Linux. · github.com, 8 Oct 2026
License
The public repository identifies its license as GPL-3.0. · github.com, 8 Oct 2026
Maker
The GitHub account identifies Sven Kanoldt as a software engineer and Rust enthusiast. · github.com, 8 Oct 2026
Maker location
The maker's GitHub profile lists Munich, Germany. · github.com, 8 Oct 2026
Notable limitation
The project describes the tool as having one purpose: measuring disk write performance. · github.com, 8 Oct 2026
Purpose
SSD Benchmark is a simple disk benchmark that measures writing performance. · github.com, 8 Oct 2026
Results
The example output reports write throughput and IOPS, along with cycle timing statistics such as the minimum, maximum, mean, and standard deviation. · github.com, 8 Oct 2026
Support
The README directs users who want a feature to file an issue on GitHub. · github.com, 8 Oct 2026
Target directory
By default, it measures the disk under the current working directory, and the `--directory` option selects another directory. · github.com, 8 Oct 2026
Test method
It writes random 8 MB chunks sequentially until 1 GB has been written, then repeats those writes for eight cycles and measures time and throughput. · github.com, 8 Oct 2026

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