| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
| Cc: | PostgreSQL-development <pgsql-hackers(at)postgreSQL(dot)org> |
| Subject: | Re: Use of system indexes |
| Date: | 2000-06-07 07:35:40 |
| Message-ID: | 2690.960363340@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> An interesting case is the pg_listener index in commands/async.c. Our
> previous index was by relname/pid. By changing this index to
> pid/relname, I can add index scans based in pid to prevent the many heap
> scans in the file. I am sure there are other places that can be
> improved.
My opinion about that is that the pg_listener operations are better off
with no indexes at all. pg_listener is small and *very* frequently
updated...
regards, tom lane
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