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

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Greg Stark <gsstark(at)mit(dot)edu>
Cc: Bruce Momjian <bruce(at)momjian(dot)us>, Andres Freund <andres(at)anarazel(dot)de>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Re: [RFC][PATCH]: CRC32 is limiting at COPY/CTAS/INSERT ... SELECT + speeding it up
Date: 2010-05-30 03:54:52
Message-ID: 28755.1275191692@sss.pgh.pa.us
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Greg Stark <gsstark(at)mit(dot)edu> writes:
> On Sun, May 30, 2010 at 3:56 AM, Greg Stark <gsstark(at)mit(dot)edu> wrote:
>> This sounds familiar. If you search back in the archives around 2004
>> or so I think you'll find a similar discussion when we replaced the
>> crc32 implementation with what we have now.

> Fwiw here's the thread (from 2005):
> http://thread.gmane.org/gmane.comp.db.postgresql.devel.general/43811

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.

regards, tom lane

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