| From: | "David E(dot) Wheeler" <david(at)kineticode(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Josh Berkus <josh(at)agliodbs(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: SELECT constant; takes 15x longer on 9.0? |
| Date: | 2010-04-06 17:00:30 |
| Message-ID: | 922B93A7-6783-4859-A881-5ADBF0850F3E@kineticode.com |
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| Thread: | |
| Lists: | pgsql-hackers |
On Apr 6, 2010, at 7:28 AM, Tom Lane wrote:
> There's something wrong with your test setup. Or, if you'd like me to
> think that there isn't, provide a self-contained test case. I ran a
> small program that does
>
> for (i = 0; i < 10000; i++)
> {
> res = PQexec(conn, "SELECT 'DBD::Pg ping test'");
> PQclear(res);
> }
>
> and I only see a few percent difference between HEAD and 8.4.3,
> on two different machines. (It does appear that HEAD is a bit slower
> for this, which might or might not be something to worry about.)
I'm going to see if I can replicate it on a second box today.
Best,
David
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