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Re: I: About "Our CLUSTER implementation is pessimal" patch - Mailing list pgsql-hackers

From Simon Riggs
Subject Re: I: About "Our CLUSTER implementation is pessimal" patch
Date
Msg-id 1285869721.1921.1591.camel@ebony
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In response to Re: I: About "Our CLUSTER implementation is pessimal" patch  (Alvaro Herrera <alvherre@commandprompt.com>)
Responses Re: I: About "Our CLUSTER implementation is pessimal" patch  (Tom Lane <tgl@sss.pgh.pa.us>)
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On Wed, 2010-09-29 at 08:44 -0400, Alvaro Herrera wrote:

> > So, I think "twice disk space of the sum of table and indexes" would be
> > the simplest explanation for safe margin.
> 
> Agreed.

Surely the peak space is x3?

Old space + sort space + new space.

-- Simon Riggs           www.2ndQuadrant.comPostgreSQL Development, 24x7 Support, Training and Services

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