| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | Abhijit Menon-Sen <ams(at)2ndquadrant(dot)com> |
| Cc: | "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>, Andres Freund <andres(at)2ndquadrant(dot)com>, Heikki Linnakangas <hlinnakangas(at)vmware(dot)com> |
| Subject: | Re: What exactly is our CRC algorithm? |
| Date: | 2014-11-11 23:50:43 |
| Message-ID: | CA+TgmobKOZVv-u0zF1PbTtPTz9o+UhC8Z6ZSkuRvxJWkZioK8Q@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Tue, Nov 11, 2014 at 6:26 AM, Abhijit Menon-Sen <ams(at)2ndquadrant(dot)com> wrote:
> 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).
Great!
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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