On Tue, Feb 3, 2026 at 11:33 AM Tom Lane <[email protected]> wrote: > Apparently, because its file system sucks. One thing we do over and > over in the TAP tests is to copy an initialized data directory to > prepare a new instance, basically "cp -RPp template-dir $PGDATA". > I'm observing that taking about 22 seconds on the AIX machine > (which is actually slower than running initdb would be: about 15s), > compared to 2.6s on the G4, and about 0.035s on my Linux workstation > (which can do the same overall -j2 check-world in five minutes). > > To be clear, there is as far as I can tell next to zero background > I/O load on cfarm119. This is a typical readout when I'm not > running anything:
I'd kinda want to see some evidence that this affects all machines rather than just this one. I mean, AIX may not be the most modern thing out there, so maybe it's not great at disk I/O, but these tests don't tell us whether it's the OS that sucks or the hardware. -- Robert Haas EDB: http://www.enterprisedb.com
