Re: What exactly is our CRC algorithm?

From: Abhijit Menon-Sen <ams(at)2ndQuadrant(dot)com>
To: pgsql-hackers(at)postgresql(dot)org
Cc: Andres Freund <andres(at)2ndquadrant(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Heikki Linnakangas <hlinnakangas(at)vmware(dot)com>
Subject: Re: What exactly is our CRC algorithm?
Date: 2014-11-11 11:26:00
Message-ID: 20141111112600.GA10569@toroid.org
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At 2014-11-04 14:40:36 +0100, andres(at)2ndquadrant(dot)com wrote:
>
> On 2014-11-04 08:21:13 -0500, Robert Haas wrote:
> >
> > Are you going to get the slice-by-N stuff working next, to speed
> > this up?
>
> I don't plan to do anything serious with it, but I've hacked up the
> crc code to use the hardware instruction.

I'm working on this (first speeding up the default calculation using
slice-by-N, then adding support for the SSE4.2 CRC instruction on top).

-- Abhijit

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