| From: | "Guillaume Smet" <guillaume(dot)smet(at)gmail(dot)com> |
|---|---|
| To: | "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: 8.3devel slower than 8.2 under read-only load |
| Date: | 2007-11-22 07:40:41 |
| Message-ID: | 1d4e0c10711212340x68299024p688d7ccffb7e939e@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Nov 22, 2007 2:17 AM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Another issue is that on read-only transactions there's an extra
> gettimeofday() call caused by pgstat_report_tabstats, which could be a
> problem on machines with slow gettimeofday(). However that shouldn't
> happen if you've got track_counts turned off, so if you don't see any
> difference with or without stats then it's not the problem for you.
The box is a Core2 duo box so I don't think it's the case.
track_counts on/off doesn't change anything to the results.
--
Guillaume
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