Re: Closing some 8.4 open items - Mailing list pgsql-hackers

From Greg Stark
Subject Re: Closing some 8.4 open items
Date
Msg-id 4136ffa0904051119j5c5464f7t1e54719c2a6b4de8@mail.gmail.com
Whole thread Raw
In response to Re: Closing some 8.4 open items  (Robert Haas <robertmhaas@gmail.com>)
Responses Re: Closing some 8.4 open items  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-hackers
On Sun, Apr 5, 2009 at 6:54 PM, Robert Haas <robertmhaas@gmail.com> wrote:
> I'm excited about some of them, but not to the point of not wanting to
> ship beta.  So +1 for removing them as per your suggestions.


I'm somewhat excited about posix_fadvise but my general feeling was
that it was best to do nothing anyways. I don't know how to test these
questions though because they depend a lot on workload and pgbench or
synthetic queries which stress prefetching aren't especially good at
measuring how fast pages get evicted.

As far as reimplementing regular index scans -- I don't currently see
any way to do it in a way that would satisfy your demands that
wouldn't be insanely complex. Hopefully I'm missing something obvious
and if someone sees what I would be happy to go ahead and implement
something. But everything I've tried has turned into a monster.

--
greg


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