| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Simon Riggs <simon(at)2ndquadrant(dot)com> |
| Cc: | Guillaume Smet <guillaume(dot)smet(at)gmail(dot)com>, Gregory Stark <stark(at)enterprisedb(dot)com>, "Jonah H(dot) Harris" <jonah(dot)harris(at)gmail(dot)com>, Greg Smith <gsmith(at)gregsmith(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: 8.3devel slower than 8.2 under read-only load |
| Date: | 2007-11-26 23:18:45 |
| Message-ID: | 5236.1196119125@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Simon Riggs <simon(at)2ndquadrant(dot)com> writes:
> Here's where I am:
> Basic test was to replace call to oper_select_candidate with a single
> item that was fed by a hardcoded value for varchar equality operator.
Well, that confirms what we knew from gprof, but surely you aren't
proposing that as a usable patch.
> What I'm actually proposing is a patch implementing a oper_select_hook
> function pointer, which allows the user to do anything they want.
Why in the world would that be a good idea?
regards, tom lane
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