Re: testing HS/SR - 1 vs 2 performance

Simon Riggs <simon@2ndquadrant.com>

From: Simon Riggs <simon@2ndQuadrant.com>
To: Heikki Linnakangas <heikki.linnakangas@enterprisedb.com>
Cc: Robert Haas <robertmhaas@gmail.com>, Tom Lane <tgl@sss.pgh.pa.us>, Erik Rijkers <er@xs4all.nl>, pgsql-hackers@postgresql.org
Date: 2010-04-22T06:56:39Z
Lists: pgsql-hackers
On Thu, 2010-04-22 at 08:57 +0300, Heikki Linnakangas wrote:
> > 
> > I think the assert is a good idea.  If there's no real problem here,
> > the assert won't trip.  It's just a safety precaution.
> 
> Right. And assertions also act as documentation, they are a precise and
> compact way to document invariants we assume to hold. A comment
> explaining why the cyclic nature of XIDs is not a problem would be nice
> too, in addition or instead of the assertions.

Agreed. I was going to reply just that earlier but have been distracted
on other things.

-- 
 Simon Riggs           www.2ndQuadrant.com