| From: | Manfred Koizar <mkoi-pg(at)aon(dot)at> |
|---|---|
| To: | "Mark Cave-Ayland" <m(dot)cave-ayland(at)webbased(dot)co(dot)uk> |
| Cc: | "'Tom Lane'" <tgl(at)sss(dot)pgh(dot)pa(dot)us>, "'Greg Stark'" <gsstark(at)mit(dot)edu>, "'Bruce Momjian'" <pgman(at)candle(dot)pha(dot)pa(dot)us>, <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Cost of XLogInsert CRC calculations |
| Date: | 2005-05-31 17:58:35 |
| Message-ID: | sg8p91hdhbpqtipc0i8c0ssgs9km10bbkn@email.aon.at |
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| Lists: | pgsql-hackers |
On Tue, 31 May 2005 12:07:53 +0100, "Mark Cave-Ayland"
<m(dot)cave-ayland(at)webbased(dot)co(dot)uk> wrote:
>Perhaps Manfred can tell us the generator
>polynomial that was used to create the lookup tables?
32 26 23 22 16 12 11 10 8 7 5 4 2 1
X + X + X + X + X + X + X + X + X + X + X + X + X + X + 1
-> http://www.opengroup.org/onlinepubs/009695399/utilities/cksum.html
Or google for "04c11db7".
Servus
Manfred
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