Re: WAL & SHM principles

Bruce Momjian <pgman@candle.pha.pa.us> writes:
> The only problem is that we would no longer have control over which
> pages made it to disk.  The OS would perhaps write pages as we modified
> them.  Not sure how important that is.

Unfortunately, this alone is a *fatal* objection.  See nearby
discussions about WAL behavior: we must be able to control the relative
timing of WAL write/flush and data page writes.
        regards, tom lane