Horton

Re: xlog location arithmetic

Peter Geoghegan <peter@2ndquadrant.com>

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From: Peter Geoghegan <peter@2ndquadrant.com>
To: Magnus Hagander <magnus@hagander.net>
Cc: Robert Haas <robertmhaas@gmail.com>, Euler Taveira de Oliveira <euler@timbira.com>, Pgsql Hackers <pgsql-hackers@postgresql.org>
Date: 2012-01-17T14:46:07Z
Lists: pgsql-hackers 
On 20 December 2011 10:27, Magnus Hagander <magnus@hagander.net> wrote:
> Doing it in numeric should be perfectly fine. The only real reason to
> pick int8 over in this context would be performance, but it's not like
> this is something that's going to be called in really performance
> critical paths...

FYI, my group commit patch has a little macro, in the spirit of
XLByteAdvance, to get the delta between two LSNs in bytes as an
uint64.

-- 
Peter Geoghegan       http://www.2ndQuadrant.com/
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