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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Tobias Brox <tobias@nordicbet.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: long running transactions
Date: Tue, 10 Oct 2006 14:26:53 -0400
Message-ID: <772.1160504813@sss.pgh.pa.us> (raw)
In-Reply-To: <20061010181953.GA7584@oppetid.no>
References: <25404.1160497420@sss.pgh.pa.us>
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	<25631.1160498572@sss.pgh.pa.us>
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	<25953.1160500192@sss.pgh.pa.us>
	<20061010171304.GC5360@oppetid.no>
	<26123.1160500707@sss.pgh.pa.us>
	<20061010174955.GA284@oppetid.no>
	<528.1160503495@sss.pgh.pa.us>
	<20061010181953.GA7584@oppetid.no>

Tobias Brox <tobias@nordicbet.com> writes:
>> Perhaps you have overly aggressive vacuum cost delay settings?

> autovacuum_vacuum_cost_delay = 500
> autovacuum_vacuum_cost_limit = 200

Well, that's going to cause it to sleep half a second after every dozen
or so page I/Os.  I think you'd be well advised to reduce the delay.

			regards, tom lane



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