On Sat, May 13, 2023 at 11:01 AM Thomas Munro <thomas.mu...@gmail.com> wrote: > On Sat, May 13, 2023 at 4:41 AM MARK CALLAGHAN <mdcal...@gmail.com> wrote: > > use XFS and O_DIRECT
As for direct I/O, we're only just getting started on that. We currently can't produce more than one concurrent WAL write, and then for relation data, we just got very basic direct I/O support but we haven't yet got the asynchronous machinery to drive it properly (work in progress, more soon). I was just now trying to find out what the state of parallel direct writes is in ext4, and it looks like it's finally happening: https://www.phoronix.com/news/Linux-6.3-EXT4
