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JonMagon / KDiskMark

A simple open-source disk benchmark tool for Linux distros
GNU General Public License v3.0
1.04k stars 43 forks source link

What unit we actually use for measurement? #147

Closed ViBE-HU closed 3 months ago

ViBE-HU commented 3 months ago

It is more like a discussion.

I have a bunch of machines and I always do some benchmarks when I update them and compare/check performance results. I use KDiskMark when possible. For a short time we can see real binary units (like GiB) when set block size. BUT the measurement is still shows in MB / GB.

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Since most OSes partially adopted both decimal and binary units it is a bit confusing to figure out which unit used actually. Back in my brain MB will remain as a binary unit but since both are commonly used I'm not sure sometimes what actually the programs use. It would be good to clarify what MB/s is. I prefer the binary unit but both can be useful.

JonMagon commented 3 months ago

Disk speed is typically measured using decimal prefixes. MiB is a binary prefix, and MB is a decimal one.

ViBE-HU commented 3 months ago

@JonMagon Thanks for the clarification. The transition is still in progress on most systems, so it is sometimes not as obvious.