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Re: [pgsql-advocacy] 8.2 -> 8.3 performance numbers

From: "Simon Riggs" <simon(at)2ndquadrant(dot)com>
To: "Mario Weilguni" <mweilguni(at)sime(dot)com>
Cc: <pgsql-performance(at)postgresql(dot)org>,"Josh Berkus" <josh(at)agliodbs(dot)com>,"Jim Nasby" <decibel(at)decibel(dot)org>
Subject: Re: [pgsql-advocacy] 8.2 -> 8.3 performance numbers
Date: 2007-07-25 14:09:09
Message-ID: 1185372549.4146.33.camel@ebony.site (view raw or flat)
Thread:
Lists: pgsql-advocacypgsql-performance
On Wed, 2007-07-25 at 15:07 +0200, Mario Weilguni wrote:
> Am Mittwoch 25 Juli 2007 schrieb Simon Riggs:
> > I have reasonable evidence that Referential Integrity is the major
> > performance bottleneck and would like some objective evidence that this
> > is the case.
> 
> Just curious, will 8.3 still check FK constraints (and use locks) even if the 
> referencing column value does not change?

That is optimised away in 8.0+

-- 
  Simon Riggs
  EnterpriseDB  http://www.enterprisedb.com


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