Horton

Re: Cost of XLogInsert CRC calculations

Manfred Koizar <mkoi-pg@aon.at>

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From: Manfred Koizar <mkoi-pg@aon.at>
To: "Mark Cave-Ayland" <m.cave-ayland@webbased.co.uk>
Cc: "'Tom Lane'" <tgl@sss.pgh.pa.us>, "'Greg Stark'" <gsstark@mit.edu>, "'Bruce Momjian'" <pgman@candle.pha.pa.us>, <pgsql-hackers@postgresql.org>
Date: 2005-05-31T17:58:35Z
Lists: pgsql-hackers 
On Tue, 31 May 2005 12:07:53 +0100, "Mark Cave-Ayland"
<m.cave-ayland@webbased.co.uk> wrote:
>Perhaps Manfred can tell us the generator
>polynomial that was used to create the lookup tables?

 32   26   23   22   16   12   11   10   8   7   5   4   2   1
X  + X  + X  + X  + X  + X  + X  + X  + X + X + X + X + X + X + 1

-> http://www.opengroup.org/onlinepubs/009695399/utilities/cksum.html

Or google for "04c11db7".

Servus
 Manfred