Re: Reduce heap tuple header size

From: Alvaro Herrera <alvherre(at)atentus(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Jan Wieck <JanWieck(at)Yahoo(dot)com>, Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>, Manfred Koizar <mkoi-pg(at)aon(dot)at>, <pgsql-patches(at)postgresql(dot)org>
Subject: Re: Reduce heap tuple header size
Date: 2002-06-22 01:38:12
Message-ID: Pine.LNX.4.44.0206212136020.11797-100000@cm-lcon-46-187.cm.vtr.net
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Tom Lane dijo:

> Jan Wieck <JanWieck(at)Yahoo(dot)com> writes:
> > Here are some numbers:
>
> > Current CVS tip: tps 34.1, 38.7, 36.6
> > avg(tps) 36.4
>
> > With patch: tps 37.0, 41.1, 41.1
> > avg(tps) 39.7
>
> > So it saves less than 3% disk space at the cost of about 9% performance
> > loss.
>
> Uh ... isn't more TPS better?

Also, is that 3% in disk space savings the actual number, or just copied
from the "anawhat"?

--
Alvaro Herrera (<alvherre[a]atentus.com>)
Y dijo Dios: "Que haya Satanás, para que la gente no me culpe de todo a mí."
"Y que hayan abogados, para que la gente no culpe de todo a Satanás"

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