| From: | Alvaro Herrera <alvherre(at)commandprompt(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Bruce Momjian <bruce(at)momjian(dot)us>, toruvinn <toruvinn(at)lain(dot)pl>, pgsql-bugs(at)postgresql(dot)org, pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: [PERFORM] BUG #4919: CREATE USER command slows down system performance |
| Date: | 2009-08-08 17:57:05 |
| Message-ID: | 20090808175705.GC6394@alvh.no-ip.org |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-bugs pgsql-performance |
Tom Lane wrote:
> Well, it's a TO-THINK-ABOUT anyway. I think the appropriate next step
> would not be to write code, but to do a detailed investigation of what
> would be gained or lost. I don't remember exactly what we do with the
> flat-file contents.
Maybe what we need is not to get rid of the flat files, but to speed
them up. If we're worried about speed in the pg_authid flatfile, and
come up with a solution to that problem, what will we do with the
pg_database flatfile when it grows too large? We can't just get rid of
it, because autovacuum needs to access it.
--
Alvaro Herrera http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.
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