Side by side
KDiskMark vs Modern FS Benchmark
Both stand on disk benchmark software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan Linux
KDiskMark combines configurable disk tests with both graphical and terminal interfaces. Be prepared for its dependencies and PolicyKit authorization requests, especially when connecting through SSH as a non-local user.
Visit KDiskMark Free plan LinuxSelf-hosted
Modern FS Benchmark offers broad filesystem workload coverage and dashboarded results for Linux environments. Its project-specific methodology and destructive real-device procedure require careful interpretation and setup.
Visit Modern FS BenchmarkThe facts
| KDiskMark | Modern FS Benchmark | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Linux | Linux, Self-hosted |
| Lowest paid plan | Free or on request | Not published |
| Plans published | 1 | None |
| Maker | Not published | Not published |
| Website | github.com | github.com |
| On disk benchmark software | #22 of 29 | #26 of 29 |
KDiskMark: what it does well
- Runs sequential and random I/O tests
- Measures IOPS and latency
- Offers a full-screen terminal mode
- Generates benchmark reports
- Free to use
What to know first
- Linux only
- Requires fio with libaio and Qt dependencies
- Requests administrator privileges
- Snap package is no longer maintained
Modern FS Benchmark: what it does well
- Covers throughput, latency, and IOPS
- Provides dashboard charts and filters
- Runs through GitHub Actions
- Supports real block-device benchmarks
- Includes filesystem integrity and recovery phases
What to know first
- Real-device runs wipe listed devices
- Hosted CI throughput is not meaningful
- Methodology is not industry-standard
- Corruption test is not a whole-filesystem check
Alternatives to KDiskMark Alternatives to Modern FS Benchmark The whole list