| From: | Bruce Momjian <bruce(at)momjian(dot)us> |
|---|---|
| To: | Pierre C <lists(at)peufeu(dot)com> |
| Cc: | Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Andrew Dunstan <andrew(at)dunslane(dot)net>, Peter Geoghegan <peter(at)2ndquadrant(dot)com>, PG Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Inlining comparators as a performance optimisation |
| Date: | 2012-01-28 14:55:04 |
| Message-ID: | 20120128145504.GA18005@momjian.us |
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| Lists: | pgsql-hackers |
On Fri, Jan 13, 2012 at 10:48:56AM +0100, Pierre C wrote:
> Maybe an extra column in pg_proc would do (but then, the proargtypes
> and friends would describe only the sql-callable version) ?
> Or an extra table ? pg_cproc ?
> Or an in-memory hash : hashtable[ fmgr-callable function ] => C version
> - What happens if a C function has no SQL-callable equivalent ?
> Or (ugly) introduce an extra per-type function
> type_get_function_ptr( function_kind ) which returns the requested
> function ptr
>
> If one of those happens, I'll dust off my old copy-optimization patch ;)
I agree that COPY is ripe for optimization, and I am excited you have
some ideas on this.
--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com
+ It's impossible for everything to be true. +
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