Re: 16-bit page checksums for 9.2

From: Andres Freund <andres(at)anarazel(dot)de>
To: pgsql-hackers(at)postgresql(dot)org
Cc: "Kevin Grittner" <Kevin(dot)Grittner(at)wicourts(dot)gov>, "Simon Riggs" <simon(at)2ndquadrant(dot)com>, aidan(at)highrise(dot)ca, stark(at)mit(dot)edu
Subject: Re: 16-bit page checksums for 9.2
Date: 2012-01-04 09:20:20
Message-ID: 201201041020.20781.andres@anarazel.de
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On Tuesday, January 03, 2012 11:21:42 PM Kevin Grittner wrote:
> (1) I like the choice of Fletcher-16. It should be very good at
> detecting problems while being a lot less expensive that an official
> CRC calculation.
I wonder if CRC32c wouldn't be a good alternative given more and more cpus
(its in SSE 4.2) support calculating it in silicon.

Andres

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