Re: Minor TODO list changes

Added:

* Add fillfactor to control reserved free space during index
creation

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Kenneth Marshall wrote:
> Bruce,
>
> Just to chime in. I also agree that fillfactor is useful. I have
> been investigating different index variants and different fill
> factors can greatly influence the performance of the index. I
> also think it may play a key role in minimizing the small table/
> many inserts/updates performance problem.
>
> --Ken
>
> On Thu, Nov 04, 2004 at 11:51:15AM -0500, Bruce Momjian wrote:
> >
> > OK, I updated all your items. I removed fillfactor because I thought I
> > was the only one who thought it was valuable and as I remember it was
> > mostly useful for ISAM, which we don't support. Can you think of a use
> > for a non-100% fillfactor?
> >
> > ---------------------------------------------------------------------------
> >
> > Simon Riggs wrote:
> > > A few minor typos/notes:
> > >
> > > INDEXES
> > >
> > > 1. On 2nd bullet...
> > > "The main difficulty with this item is the problem of creating an index
> > > that can spam more than one table."
> > >
> > > should be span, not spam
> > >
> > > 2. On 6th bullet
> > > * "Use index to restrict rows returned by multi-key index when used
> > > with non-consecutive keys to reduce heap accesses
> > >
> > > For an index on col1,col2,col3, and a WHERE clause of col1 = 5 and col3
> > > = 9, spin though the index checking for col1 and col3 matches, rather
> > > than just col1 "
> > >
> > > This is also known as "skip-scanning", so it would be good to use that
> > > phrase in the TODO
> > >
> > > 3. Whatever happened to the FILLFACTOR todo item? AFAICS it disappeared
> > > sometime at the beginning of August, but I'm not sure why?
> > >
> > > REF INTEGRITY
> > >
> > > ...Didn't we just get rid of deferred triggers?? Perhaps I read that
> > > wrong.
> > >
> > >
> > > CACHE
> > >
> > > 1. 1st bullet....prefix it with "Use posix_fadvise() API to let OS know
> > > how files will be used by PostgreSQL. This would allow, for example,
> > > a..." (replacing the word "add").
> > >
> > >
> > >
> > > --
> > > Best Regards, Simon Riggs
> > >
> > >
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> >
> > --
> > Bruce Momjian | http://candle.pha.pa.us
> > pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 359-1001
> > + If your life is a hard drive, | 13 Roberts Road
> > + Christ can be your backup. | Newtown Square, Pennsylvania 19073
> >
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>

--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 359-1001
+ If your life is a hard drive, | 13 Roberts Road
+ Christ can be your backup. | Newtown Square, Pennsylvania 19073