Ted Ts’o sent out the EXT4 updates today for Linux 6.11. He explained in that pull request:
“Many cleanups and bug fixes in ext4, especially for the fast commit feature. Also some performance improvements; in particular, improving IOPS and throughput on fast devices running Async Direct I/O by up to 20% by optimizing jbd2_transaction_committed().”
Mine too. I could not bring myself to adopt a new or different FS at the moment. I wonder what “fast devices” and “slow” in this context means.
NVME SSDs vs HDDs, perhaps?
Might be. It’s just guess work. My guess was maybe NVME SSD vs SATA SSD. Or maybe they refer to the CPU+RAM too.