| From: | Simon Riggs <simon(at)2ndquadrant(dot)com> |
|---|---|
| To: | Heikki Linnakangas <heikki(at)enterprisedb(dot)com> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Bruce Momjian <bruce(at)momjian(dot)us>, Pavan Deolasee <pavan(dot)deolasee(at)gmail(dot)com>, Gregory Stark <stark(at)enterprisedb(dot)com>, PostgreSQL-patches <pgsql-patches(at)postgresql(dot)org> |
| Subject: | Re: HOT patch - version 15 |
| Date: | 2007-09-08 20:13:17 |
| Message-ID: | 1189282397.4281.38.camel@ebony.site |
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| Thread: | |
| Lists: | pgsql-patches |
On Sat, 2007-09-08 at 17:46 +0100, Heikki Linnakangas wrote:
> Tom Lane wrote:
> > Compared to what it currently takes to check the same tuple (a separate
> > index entry fetch and traversal to the heap page), this is already an
> > enormous performance improvement.
>
> Though keep in mind that we kill index tuples as soon as they're deemed
> to be dead. Nevertheless, I'm not very worried about the cost of
> following the chain either. But that's something we can quite easily
> measure if we want to.
OK, I'm good about it if you guys are.
--
Simon Riggs
2ndQuadrant http://www.2ndQuadrant.com
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