| From: | Thom Brown <thom(at)linux(dot)com> |
|---|---|
| To: | Peter Geoghegan <peter(at)2ndquadrant(dot)com> |
| Cc: | Bruce Momjian <bruce(at)momjian(dot)us>, Robert Haas <robertmhaas(at)gmail(dot)com>, Simon Riggs <simon(at)2ndquadrant(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Checksums, state of play |
| Date: | 2012-03-08 21:01:40 |
| Message-ID: | CAA-aLv6DA39EwDTANTT1msCPDmwEgMAASTNEJV0hVNP-xkdEQg@mail.gmail.com |
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| Lists: | pgsql-hackers |
On 8 March 2012 20:55, Peter Geoghegan <peter(at)2ndquadrant(dot)com> wrote:
> On 7 March 2012 20:56, Bruce Momjian <bruce(at)momjian(dot)us> wrote:
>> Yep, good summary. Giving ourselves a few months to think about it and
>> consider other failure cases will make this a great 9.3 addition.
>
> Recent Intel processors that support SSE 4.2, including those based on
> the core microarchitecture, can calculate a CRC-32C in hardware using
> a higher level instruction, similar to the AES related instructions
> that Intel chips have had for some time now. Perhaps we should
> consider using hardware acceleration where available.
>
> Some interesting details are available from here:
>
> http://lwn.net/Articles/292984/
That's what Facebook did to speed up MySQL.
--
Thom
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