AmigaDiskBench

AmigaDiskBench is a modern, high-performance disk benchmarking utility
specifically designed for AmigaOS 4.1 Final Edition. It provides a robust,
ReAction-based GUI to measure and analyze the performance of various storage
devices, filesystems, and hardware configurations.

Key Features

Comprehensive Benchmark Profiles:

Sprinter: Small file I/O and metadata performance.
Heavy Lifter: Large file sequential throughput with big chunks.
Legacy: Large file performance with standard 512-byte blocks.
Daily Grind: A pseudo-random mix of operations representing real-world usage.
Sequential Read/Write: Professional-grade pure sequential throughput tests.
Random 4K Read/Write: High-stress IOPS testing for SSDs and fast media.
Mixed 70/30: Real-world read/write mix simulation.
Profiler: Filesystem metadata performance analysis.

Precision & Reliability:

Microsecond Precision: Uses timer.device for high-accuracy timing.
Trimmed Mean: Optional outlier filtering to remove OS background noise from
results.
Cache Flushing: Automatic buffer flushing attempts to ensure measuring disk
speed, not RAM speed.

Data Management:

Current Session vs. History: Separate tabs for active benchmarking and
historical analysis.
CSV Persistence: Results are automatically saved to a standardized CSV format
(AmigaDiskBench_History.csv).
Smart Sync: Changing the CSV path automatically keeps your session context
clean.

Analysis Tools:

Comparison Mode: Compare any two results side-by-side (Session or History).
Global Report: Aggregate statistics (Avg/Max) across all run tests.
Visualizations: Interactive trend graphs to track performance over time.
Hardware ID: Automatic detection of device names (e.g., a1ide.device), units,
and filesystem types.

Installation

No special installation is required. Just extract the archive to a location of
your choice. Requires AmigaOS 4.1 Final Edition or newer.

How to Use

Running a Benchmark

Select a Target: Use the "Benchmark Control" tab to select a volume or
partition.
Configure Tests: Choose a Test Type, Block Size, and number of Passes (3-5
recommended).
Run: Click the "Run Benchmark" button.
Tip: Toggle the "Bulk" tab to run multiple tests in sequence.

Analyzing Results

Benchmark Tab: Displays results from your current session.
History Tab: Displays all historical results saved to your CSV file.
Compare: Check the boxes next to any two results and click "Compare Selected".
Details: Double-click any result to see detailed hardware info and raw metrics.
Delete/Clear: Remove specific entries or wipe the entire history.
Visualization Tab: View performance trends filtered by Volume and Test Type.

Preferences

Access the Preferences menu to:

Set default test parameters (Passes, Block Size).
Toggle "Trimmed Mean" calculation.
Change the location of the history CSV file.