From: Alvaro Herrera <alvherre@commandprompt.com>
To: Carlo Stonebanks <stonec.register@sympatico.ca>
Cc: pgsql-performance@postgresql.org
Subject: Re: Performance on 8CPU's and 32GB of RAM
Date: Wed, 5 Sep 2007 12:03:48 -0400
Message-ID: <20070905160347.GG6102@alvh.no-ip.org> (raw)
In-Reply-To: <4F731254987542AF807CA3EDF411D12B@serenity>
References: <fbkn5d$cfq$1@news.hub.org>
<20070904230639.GA23731@alvh.no-ip.org>
<4F731254987542AF807CA3EDF411D12B@serenity>
Carlo Stonebanks wrote:
> >> It sounds like you will need a huge lot of vacuuming effort to keep up.
> Maybe you should lower autovac scale factors so that your tables are
> visited more frequently. A vacuum_delay of 40 sounds like too much
> though.
> <<
>
> Does autovacuum not impede performance while it is vacuuming a table?
It causes I/O. Not sure what else you have in mind. vacuum_delay
throttles the I/O usage, at the expense of longer vacuum times.
--
Alvaro Herrera http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support
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To: pgsql-performance@postgresql.org
Cc: alvherre@commandprompt.com, stonec.register@sympatico.ca
Subject: Re: Performance on 8CPU's and 32GB of RAM
In-Reply-To: <20070905160347.GG6102@alvh.no-ip.org>
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