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Head-to-head · Disk Benchmark Software

Modern FS Benchmark vs KDiskMark

  • Updated Oct 2026
  • Both researched from official sources
  • 6 checks side by side
Higher score Modern FS Benchmark #6 in Disk Benchmark Software 7.7/10 Free plan Free plan✓ 5 of 5 features Visit site
KDiskMark #9 in Disk Benchmark Software 7.4/10 Free plan Free plan✓ 5 of 5 features Visit KDiskMark

Modern FS Benchmark leads on 0 checks, KDiskMark on 0, and 6 are even. Who comes out ahead on the 6 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreModern FS Benchmark · 7.7/10
  • Free planboth

Modern FS Benchmark scores higher on our rubric for disk benchmark software: 7.7 against 7.4 out of 10; our editors rank them #6 and #9.

Modern FS Benchmark is the better fit for advanced Linux filesystem evaluation. KDiskMark is the better fit for linux users wanting an interactive benchmark.

  • Modern FS Benchmark fits best

    Advanced Linux filesystem evaluation

  • KDiskMark fits best

    Linux users wanting an interactive benchmark

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Side by side

Feature Modern FS Benchmark 7.7/10 Visit ↗ KDiskMark 7.4/10 Visit ↗
At a glance
Editor score 7.7 7.4
Ranking #6 in Disk Benchmark Software #9 in Disk Benchmark Software
Best for Advanced Linux filesystem evaluation Linux users wanting an interactive benchmark
Pricing model Free Free
Starting price Free plan Free plan
Free plan ✓ ✓
Free trial — —
Deployment Self-hosted Desktop
Platforms Linux Linux
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business
Features Modern FS Benchmark 5/5 · KDiskMark 5/5
Random I/O tests ✓ ✓
Sequential tests ✓ ✓
IOPS measurement ✓ ✓
Latency measurement ✓ ✓
Command-line interface ✓ ✓
Specs
Supported platforms Linux Linux
Our review
Pros
  • Tests redundancy, snapshots, compression, rebuilds, and recovery
  • Measures random and sequential I/O, IOPS, latency, and tail behavior
  • Runs in GitHub Actions or on real hardware with JSON and dashboards
  • Configures block size, queue depth, and thread count
  • Measures sequential, random, IOPS, and latency performance
  • Offers both a Qt graphical interface and interactive TUI
Cons
  • Linux-only platform support
  • Requires filesystem and hardware benchmarking expertise
  • Focused on filesystem evaluation rather than general disk testing
  • Supports Linux distributions rather than multiple operating systems
  • Focused on storage benchmarking rather than broader system tests
  • Requires familiarity with benchmark settings for detailed comparisons
Our verdict

Modern FS Benchmark is an open-source Linux benchmark suite for comparing copy-on-write and classic filesystem stacks. It is designed for engineers evaluating btrfs, ZFS, bcachefs, ext4, and XFS across single-device, redundant, encrypted,…

Read the review →

KDiskMark is an open-source disk benchmark application for Linux distributions. It is designed for users assessing HDD and SSD performance through configurable storage tests, with both a Qt graphical interface and an interactive terminal…

Read the review →
  1. Modern FS BenchmarkDisk Benchmark Software 7.7Free plan
  2. KDiskMarkDisk Benchmark Software 7.4Free plan

Strengths and trade-offs

  • Modern FS Benchmark — where it wins

    • Tests redundancy, snapshots, compression, rebuilds, and recovery
    • Measures random and sequential I/O, IOPS, latency, and tail behavior
    • Runs in GitHub Actions or on real hardware with JSON and dashboards

    Where it doesn't

    • Linux-only platform support
    • Requires filesystem and hardware benchmarking expertise
    • Focused on filesystem evaluation rather than general disk testing

  • KDiskMark — where it wins

    • Configures block size, queue depth, and thread count
    • Measures sequential, random, IOPS, and latency performance
    • Offers both a Qt graphical interface and interactive TUI

    Where it doesn't

    • Supports Linux distributions rather than multiple operating systems
    • Focused on storage benchmarking rather than broader system tests
    • Requires familiarity with benchmark settings for detailed comparisons
  • Modern FS Benchmark7.7/10 · Free plan

    A deep Linux filesystem benchmark suite for repeatable performance and recovery comparisons.

    Visit siteFull verdict →
  • KDiskMark7.4/10 · Free plan

    A configurable Linux disk benchmark with GUI, TUI, IOPS, latency, and report generation.

    Visit KDiskMarkFull verdict →

More comparisons

All disk benchmark software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update