fio vs KDiskMark
fio
github.comKDiskMark
github.comSide by side
| Figure | fio | KDiskMark |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | Yes |
| Self-hosted | Yes | — |
| Plans published | 1 | 1 |
| Spec score · PC Benchmark Software | 8.4 (#12) | 7.5 (#51) |
| Spec score · PC benchmark tools | 8.4 (#17) | 7.4 (#55) |
| Free plan | Yes | Yes |
| Purpose | fio simulates configurable I/O workloads for performance testing and reproducing bugs. | KDiskMark benchmarks HDDs and SSDs through a graphical interface built around Flexible I/O Tester (fio). |
| Support | The maintainers direct bug reports to the fio mailing list or GitHub rather than to them by direct email. | The project asks users to open an issue with ideas, criticism, or suggestions. |
Plans
In their own words
fio
fio is a free storage I/O workload simulator for performance testing and reproducing bugs. Its job files can define multiple threads, processes and files, with sequential, random or mixed reads and writes using buffered, direct or raw I/O. Tune block and I/O size, I/O engine, queue depth, target files or devices, and job count. Documented engines include Linux io_uring and libaio, POSIX asynchronous I/O, and synchronous read/write options. Separate engines support HTTP GET and PUT requests to WebDAV or S3 endpoints and access to Ceph RADOS and RBD. Verification options can check written data after a workload, including repeated burn-in tests. Results are available in normal text, terse, JSON and JSON+ formats, plus bandwidth and latency logs; terse output is intended for scripts, tables or graphs. fio supports Linux, Solaris, AIX, HP-UX, macOS, NetBSD, OpenBSD, Windows, FreeBSD and DragonFly. The HTTP engine supports direct I/O only at depth 1, with scaling through multiple jobs.