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

Andres Freund <andres@anarazel.de>

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From: Andres Freund <andres@anarazel.de>
To: "Pierre C" <lists@peufeu.com>
Cc: "Greg Stark" <gsstark@mit.edu>, "Tom Lane" <tgl@sss.pgh.pa.us>, "Bruce Momjian" <bruce@momjian.us>, pgsql-hackers@postgresql.org, singh.gurjeet@gmail.com
Date: 2010-06-07T10:45:58Z
Lists: pgsql-hackers 
On Monday 07 June 2010 12:37:13 Pierre C wrote:
> > 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...
Different polynom unfortunately...

Andres