Open Source Rust Benchmark Software

Disk Speed Test is a lightweight storage benchmark for Windows, built as a modern alternative to CrystalDiskMark. It measures sequential and random read/write speed, IOPS and latency for SSDs, NVMe drives, hard disks, USB sticks, SD cards and network drives. Unlike CrystalDiskMark, which runs Microsoft's DiskSpd tool for each test, Disk Speed Test has its own native I/O engine written in Rust. Everything ships as a single small executable with no installer and no external tools. It uses unbuffered, overlapped I/O, so results reflect the drive itself rather than the Windows file cache. It offers the familiar tests (SEQ1M Q8T1, SEQ1M Q1T1, RND4K Q32T1, RND4K Q1T1) and profiles, plus things CrystalDiskMark doesn't show: a live throughput graph, latency percentiles (p50 to p99.99), per-run results and an optional mixed read/write test. Results can be copied or saved as text in the familiar CrystalDiskMark layout.

A command-line benchmarking tool. Statistical analysis across multiple runs. Support for arbitrary shell commands. Constant feedback about the benchmark progress and current estimates. Warmup runs can be executed before the actual benchmark. Cache-clearing commands can be set up before each timing run. Statistical outlier detection to detect interference from other programs and caching effects. Export results to various formats: CSV, JSON, Markdown, AsciiDoc. Parameterized benchmarks (e.g. vary the number of threads). Cross-platform. Hyperfine will automatically determine the number of runs to perform for each command. By default, it will perform at least 10 benchmarking runs and measure for at least 3 seconds. For programs that perform a lot of disk I/O, the benchmarking results can be heavily influenced by disk caches and whether they are cold or warm. If you want to run the benchmark on a warm cache, you can use the -w/--warmup option.