Re: [HACKERS] WAL & SHM principles

[Martin Devera]

> > Bruce Momjian <[EMAIL PROTECTED]> 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.
> 
> Bummer.
> 
BTW, what means "bummer" ?
But for many OSes you CAN control when to write data - you can mlock
individual pages.


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