"Heikki Linnakangas" <[EMAIL PROTECTED]> writes:
> We mustn't write data pages before the WAL hits the disk, but we don't
> have any such limitation for WAL.

Um, you're right, I was remembering discussions about trying to mmap
data files.  Still, googling "msync performance" leaves me full of
concern about whether this would be a portable improvement.

                        regards, tom lane

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