pg.ddx.io  pgsql-performance@postgresql.org mailing list archive  

help / color / mirror / Atom feed
From: Tom Lane <tgl@sss.pgh.pa.us>
To: Steven Flatt <steven.flatt@gmail.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Insertion to temp table deteriorating over time
Date: Fri, 15 Dec 2006 14:30:26 -0500
Message-ID: <20792.1166211026@sss.pgh.pa.us> (raw)
In-Reply-To: <357fa7590612151121x5f95102fj21a96b1bdc7eb002@mail.gmail.com>
References: <357fa7590612130844q58ef3ca5q31e164f9b006e0fc@mail.gmail.com>
	<13032.1166052447@sss.pgh.pa.us>
	<357fa7590612141240t55e70695q770a05a68a67536c@mail.gmail.com>
	<25209.1166131396@sss.pgh.pa.us>
	<357fa7590612150821i3eca3f66ge2ced1ee20fa2dac@mail.gmail.com>
	<11651.1166202586@sss.pgh.pa.us>
	<357fa7590612150955g1b9c733duaf000c23d28aa8af@mail.gmail.com>
	<12508.1166206006@sss.pgh.pa.us>
	<357fa7590612151026t4ae033f6w5367cac9d0b67064@mail.gmail.com>
	<13947.1166209788@sss.pgh.pa.us>
	<357fa7590612151121x5f95102fj21a96b1bdc7eb002@mail.gmail.com>

"Steven Flatt" <steven.flatt@gmail.com> writes:
> I've been trying to reproduce the problem for days now :).  I've done pretty
> much exactly what you describe below, but I can't reproduce the problem on
> any of our lab machines.  Something is indeed special in this environment.

Yuck.  You could try strace'ing the problem backend and see if anything
is visibly different between fast and slow operation.  I don't suppose
you have oprofile on that machine, but if you did it'd be even better.

			regards, tom lane



view thread (22+ messages)  latest in thread

Message-ID: <20792.1166211026@sss.pgh.pa.us>
Permalink:  ../20792.1166211026@sss.pgh.pa.us/
Also on:    postgresql.org/message-id/20792.1166211026@sss.pgh.pa.us

 · 

reply
Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Reply to all the recipients using the --to and --cc options:
  reply via email

  To: pgsql-performance@postgresql.org
  Cc: tgl@sss.pgh.pa.us, steven.flatt@gmail.com
  Subject: Re: Insertion to temp table deteriorating over time
  In-Reply-To: <20792.1166211026@sss.pgh.pa.us>

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox