Re: long running transactions

From: Tobias Brox <tobias(at)nordicbet(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Tobias Brox <tobias(at)nordicbet(dot)com>, pgsql-performance(at)postgresql(dot)org
Subject: Re: long running transactions
Date: 2006-10-10 18:43:54
Message-ID: 20061010184354.GA24098@oppetid.no
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[Tom Lane - Tue at 02:26:53PM -0400]
> > 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.

Modified it to 20/250, and it definitively helped. Sorry for the
list verbosity; I should have been able to resolve this myself already
some 2-3 emails ago :-) I wanted a "soft" introduction of autovac in
production, and assumed that it was better to begin with too much sleep
than too little! Well, well.

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