From: Jim C. Nasby <jnasby@pervasive.com>
To: Matthew T. O'Connor <matthew@zeut.net>
Cc: pgsql-admin@postgresql.org
Cc: pgsql-performance@postgresql.org
Subject: Re: [PERFORM] Default autovacuum settings too conservative
Date: Mon, 6 Feb 2006 23:05:45 -0600
Message-ID: <20060207050545.GZ1240@pervasive.com> (raw)
In-Reply-To: <43E12A03.6070906@zeut.net>
References: <20060201211633.GM95850@pervasive.com>
<43E12A03.6070906@zeut.net>
On Wed, Feb 01, 2006 at 04:37:07PM -0500, Matthew T. O'Connor wrote:
> I think the default settings should be designed to minimize the impact
> autovacuum has on the system while preventing the system from ever
> getting wildly bloated (also protect xid wraparound, but that doesn't
> have anything to do with the thresholds).
I don't really see the logic behind that. Problems caused by inadequate
vacuuming seem to be much more prevalent than problems caused by vacuum
impacting the system. If vacuum impact is a concern I think it more
reasonable to make the default vacuum_cost_delay non-zero instead.
--
Jim C. Nasby, Sr. Engineering Consultant jnasby@pervasive.com
Pervasive Software http://pervasive.com work: 512-231-6117
vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461
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To: pgsql-performance@postgresql.org
Cc: jnasby@pervasive.com, matthew@zeut.net, pgsql-admin@postgresql.org
Subject: Re: [PERFORM] Default autovacuum settings too conservative
In-Reply-To: <20060207050545.GZ1240@pervasive.com>
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