X-Original-To: pgsql-performance-postgresql.org@localhost.postgresql.org Received: from localhost (mx1.hub.org [200.46.208.251]) by postgresql.org (Postfix) with ESMTP id 623C39F9B01 for ; Thu, 25 May 2006 13:26:56 -0300 (ADT) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.208.251]) (amavisd-new, port 10024) with ESMTP id 89429-05 for ; Thu, 25 May 2006 13:26:46 -0300 (ADT) X-Greylist: from auto-whitelisted by SQLgrey- Received: from sss.pgh.pa.us (sss.pgh.pa.us [66.207.139.130]) by postgresql.org (Postfix) with ESMTP id 459DE9F94EA for ; Thu, 25 May 2006 13:26:46 -0300 (ADT) Received: from sss2.sss.pgh.pa.us (tgl@localhost [127.0.0.1]) by sss.pgh.pa.us (8.13.6/8.13.6) with ESMTP id k4PGQin0013759; Thu, 25 May 2006 12:26:44 -0400 (EDT) To: Chris Mair cc: pgsql-performance@postgresql.org Subject: Re: lowering priority automatically at connection In-reply-to: <1148573784.6017.26.camel@dell.home.lan> References: <1148573784.6017.26.camel@dell.home.lan> Comments: In-reply-to Chris Mair message dated "Thu, 25 May 2006 18:16:24 +0200" Date: Thu, 25 May 2006 12:26:43 -0400 Message-ID: <13758.1148574403@sss.pgh.pa.us> From: Tom Lane X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200605/464 X-Sequence-Number: 19251 Chris Mair writes: > I find this very helpful: > Lowering the priority of a PostgreSQL query > http://weblog.bignerdranch.com/?p=11 That guy doesn't actually have the foggiest idea what he's doing. The reason there is no built-in capability to do that is that it *does not work well*. Search the list archives for "priority inversion" to find out why not. regards, tom lane