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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Erik Jones <erik@myemma.com>
Cc: Alvaro Herrera <alvherre@commandprompt.com>
Cc: Mikko Partio <mpartio@gmail.com>
Cc: Pallav Kalva <pkalva@livedatagroup.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: 8.2 Autovacuum BUG ?
Date: Fri, 31 Aug 2007 15:48:43 -0400
Message-ID: <815.1188589723@sss.pgh.pa.us> (raw)
In-Reply-To: <127CA85E-A8A0-45D0-9368-4474ED6C99BD@myemma.com>
References: <46D83427.60001@livedatagroup.com>
	<25038.1188574775@sss.pgh.pa.us>
	<46D83C50.3040409@livedatagroup.com>
	<20070831161158.GD8046@alvh.no-ip.org>
	<2ca799770708311131r5ae5e3eera66a7cea1fc5917d@mail.gmail.com>
	<20070831184744.GK8046@alvh.no-ip.org>
	<247.1188587325@sss.pgh.pa.us>
	<127CA85E-A8A0-45D0-9368-4474ED6C99BD@myemma.com>

Erik Jones <erik@myemma.com> writes:
> On Aug 31, 2007, at 2:08 PM, Tom Lane wrote:
>> It's worth noting that the patch Florian is working on, to suppress
>> assignment of XIDs for transactions that never write anything, will make
>> for a large reduction in the rate of XID consumption in many real-world
>> applications.

> Off topic and just out of curiousity, is this the work that will  
> allow standby servers to have selects run on them without stopping  
> WAL replay?

It's a small component of that.

			regards, tom lane



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