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Re: Re: [RFC][PATCH]: CRC32 is limiting at COPY/CTAS/INSERT ... SELECT + speeding it up

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From: "Pierre C" <lists@peufeu.com>
To: "Andres Freund" <andres@anarazel.de>, "Greg Stark" <gsstark@mit.edu>
Cc: "Tom Lane" <tgl@sss.pgh.pa.us>, "Bruce Momjian" <bruce@momjian.us>, pgsql-hackers@postgresql.org, singh.gurjeet@gmail.com
Date: 2010-06-07T10:37:13Z
Lists: pgsql-hackers 
> On Sunday 30 May 2010 18:29:31 Greg Stark wrote:
>> On Sun, May 30, 2010 at 4:54 AM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>> > I read through that thread and couldn't find much discussion of
>> > alternative CRC implementations --- we spent all our time on arguing
>> > about whether we needed 64-bit CRC or not.

SSE4.2 has a hardware CRC32 instruction, this might be interesting to  
use...