AmorphousDiskMark vs Quickbench

AmorphousDiskMark is a free, open-source macOS utility for measuring storage read and write performance. It reports scores in megabytes per second or IOPS, with both units available in result tooltips. Sequential measurements use 1 MiB blocks, while random measurements use 4 KiB blocks; either type can run at queue depths from 1 through 1024. You can select random or zero test data, choose test sizes from 16 MiB to 64 GiB, and set intervals from 0 seconds to 10 minutes. Results can be copied as plain text, and the app can save a screenshot of its window. The product page lists macOS 10.9.5 or later, and the App Store describes it as Mac-only. The maker says an internet connection is unnecessary after downloading. The GitHub repository identifies an MIT license. The listed plan is free. Repeating read/write measurements may shorten storage-device lifespan.

Quickbench is a free Bash script for measuring basic performance on Linux-based hosts, including virtual machines. It reports CPU configuration and runs busy-loop benchmarks at different parallel job counts, returning loop rates. Memory checks report Linux-allocatable memory and run a simple bandwidth test that may reflect L1 or L2 cache performance. Storage checks use parallel dd transfers with 4k and 1M blocks, reporting bandwidth and I/O rates. They run on the filesystem in the current working directory; to measure another device, mount its filesystem there and run Quickbench from that location. The script is designed for minimal Linux servers and needs no specific dependencies. It takes one parameter: the maximum duration in seconds for each benchmark loop. The project recommends at least 30 seconds for statistically meaningful results and cautions that values below 10 seconds may be unreliable. CPU loop measurements are not calibrated, so comparisons call for matching Quickbench, kernel, Bash, and dd versions. The project describes storage testing as non-thorough and says it cannot measure I/O completion latency. It is licensed under GPL-3.0.