ATTO Disk Benchmark vs simple-disk-benchmark

ATTO Disk Benchmark measures read and write performance and I/O throughput for drives and storage systems. It can test hard drives, SSDs, RAID and storage controllers, and host adapters. Storage reached over a network or block connection can be measured through a file system. Tests may run continuously or capture snapshots, with adjustable transfer sizes and queue depths; multiple disks can be tested in one run. ATTO describes its file-system performance tests as non-destructive. Custom test profiles and command-line automation are supported, and results can be saved in BMK, TST or LOG formats or sent to print. Windows and macOS versions are listed: the Windows download page lists v5.00.3, while the macOS page lists v1.01. ATTO identifies drive manufacturers, IT professionals maintaining IT environments, and hardware review sites as users of its Windows benchmark. The utility is free. Technical support is available by email or contact form.

simple-disk-benchmark is a free command-line tool for measuring disk read and write performance on Linux, macOS, and Windows. It can run read tests, write tests, or both, with controls for test-file size, block size, cycle count, and random seeking. Results are shown in a bar chart and can be exported as JSON, including timing summaries and individual run timings. The benchmark creates a file of the selected size at the chosen path, deleting any existing file there. Options let users keep the file after a run, skip file creation, and choose whether the file is closed between cycles. The project describes cache-bypass methods for macOS and Linux. Install it with Cargo on all listed platforms or with Homebrew on macOS. The project says macOS and Linux are tested; Windows support is limited to unit tests, with no other testing or validation stated. It is MIT licensed, and the README suggests piping JSON output to jq or csvkit for CSV use.