Re: Bgwriter behavior

Added to TODO:

* Improve the background writer

Allow the background writer to more efficiently write dirty buffers
from the end of the LRU cache and use a clock sweep algorithm to
write other dirty buffers to reduced checkpoint I/O

---------------------------------------------------------------------------

Simon Riggs wrote:
> On Wed, 2004-12-22 at 04:43, Tom Lane wrote:
> > Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> > > So what are we doing for 8.0?
> >
> > Well, it looks like RC2 has already crashed and burned --- I can't
> > imagine that Marc will let us release without an RC3 given what was
> > committed today, never mind the btree bug that Mark Wong seems to have
> > found. So maybe we should just bite the bullet and do something real
> > about this.
> >
> > I'm willing to code up a proposed patch for the two-track idea I
> > suggested, and if anyone else has a favorite maybe they could write
> > something too. But do we have the resources to test such patches and
> > make a decision in the next few days?
> >
> > At the moment my inclination is to sit on what we have. I've not seen
> > any indication that 8.0 is really worse than earlier releases; the most
> > you could argue against it is that it's not as much better as we hoped.
> > That's not grounds to muck around at the RC3 stage.
>
> Agreed, if somewhat reluctantly.
>
> We may have the time to test, but it is clear that we do not have the
> time to validate those tests, then discuss and agree on the results.
>
> Time to go with what we have.
>
> [Mark's possible bug seems a higher priority for me.]
>
> --
> Best Regards, Simon Riggs
>
>
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