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Re: Enabling Checksums

Tom Lane <tgl@sss.pgh.pa.us>

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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Andres Freund <andres@2ndquadrant.com>
Cc: Garick Hamlin <ghamlin@isc.upenn.edu>, Heikki Linnakangas <hlinnakangas@vmware.com>, Simon Riggs <simon@2ndquadrant.com>, Jeff Davis <pgsql@j-davis.com>, Greg Smith <greg@2ndquadrant.com>, PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2013-03-06T18:24:43Z
Lists: pgsql-hackers 
Andres Freund <andres@2ndquadrant.com> writes:
> On 2013-03-06 11:21:21 -0500, Garick Hamlin wrote:
>> If picking a CRC why not a short optimal one rather than truncate CRC32C?

> CRC32C is available in hardware since SSE4.2.

I think that should be at most a fourth-order consideration, since we
are not interested solely in Intel hardware, nor do we have any portable
way of getting at such a feature even if the hardware has it.

			regards, tom lane