Why is Ubuntu 23.04 file I/O so much faster than Fedora 38?

Last week I published two videos: one for Ubuntu 23.04 and one for Fedora Workstation 38. In those two videos was a benchmark of the usual subsystems I measure. The Fio benchmark showed a drastic difference between Ubuntu and Fedora, and I mean Huge difference, I mean 100,000 IOPS difference. I dug into the data and here is what I found.

00:00 – Intro
00:30 – Recap of Fedora Benchmark Issue
01:57 – Four I/O Schedulers
03:57 – I/O Sched: None
04:50 – mq-deadline
07:26 – Budget Fair Queuing BFQ
10:53 – Kyber
14:15 – Red Hat Use Cases
15:06 – Law of Minimiums
18:08 – Final Thoughts
19:15 – Wrap-up
19:33 – Bench
26:25 – Closeout
26:37 – Outro

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#Fedora38 #Ubuntu2304 #Performance