Matthew Kirkwood <matthew@hairy.beasts.org> writes:
> Here is a patch against 7.1beta5 to use mmap(), and thus a
> single write, to initialise xlogs. It may well improve
> performance of this on platforms/filesystems which write
> metadata synchronously.
Have you *demonstrated* any actual performance improvement from this?
How much? On what platforms?
I don't believe in adding unportable alternative implementations without
pretty darn compelling reasons ...
regards, tom lane