A few of things.
- XFS is a quite capable, full featured and still competitive filesystem and it would be nice see how it fares in these benchmarks.
- Which benchmark would be the most pertinent to an app developer or a web server or a database server or a typical office user?
- I would love to see how much multiple cpu cores affect the performance of each filesystem. When it comes to CPU usage, I have plenty and I'm barely using any of it so when there's a tradeoff to be made, the filesystem that maximizes CPU usage for even the slightest gain in IO performance wins in my book. In other words, if increasing the filesystem performance has a heavy cpu cost, then I'm all for it. I have six cores on my desktop and I'd be glad to give one up to the filesystem.