Re: Auto Vacuum

Matthew T. O'Connor wrote:
> Bruce Momjian wrote:
>
> >I have added an auto-vacuum TODO item:
> >
> >* Auto-vacuum
> > o Move into the backend code
> > o Scan the buffer cache to find free space or use background writer
> > o Use free-space map information to guide refilling
> >
>
> I'm not sure what you mean exactly by "Scan the buffer cache to find
> free space or use background writer", the other two are definitely high
> priority todo items (at least as far as autovacuum in concerned).
>

I am thinking we could look for expired tuples when while they are in
the buffer cache or before they are written to disk so we don't have to
a sequential scan to find them.

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