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Re: We need to log aborted autovacuums

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: Simon Riggs <simon(at)2ndquadrant(dot)com>
Cc: Josh Berkus <josh(at)agliodbs(dot)com>, Greg Smith <greg(at)2ndquadrant(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: We need to log aborted autovacuums
Date: 2011-01-17 01:50:49
Message-ID: AANLkTi=BQ_u+uMhAeGPgJ1Q-xXpLbgvjaOOv0SOAXStV@mail.gmail.com (view raw or flat)
Thread:
Lists: pgsql-hackers
On Sun, Jan 16, 2011 at 8:36 PM, Simon Riggs <simon(at)2ndquadrant(dot)com> wrote:
> I agree with you, but if we want it *this* release, on top of all the
> other features we have queued, then I suggest we compromise. If you hold
> out for more feature, you may get less.
>
> Statement timeout = 2 * (100ms + autovacuum_vacuum_cost_delay) *
> tablesize/(autovacuum_vacuum_cost_limit / vacuum_cost_page_dirty)

I'm inclined to think that would be a very dangerous compromise.

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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