Re: 8.3devel slower than 8.2 under read-only load

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
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
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

In response to

Browse pgsql-hackers by date

  From Date Subject
Next Message Albe Laurenz 2007-11-22 07:48:36 Re: backup_label and server start
Previous Message cinu 2007-11-22 06:25:23 run_build.pl ~ By Andrew Dunstan