| From: | "Mark Cave-Ayland" <m(dot)cave-ayland(at)webbased(dot)co(dot)uk> |
|---|---|
| To: | "'Manfred Koizar'" <mkoi-pg(at)aon(dot)at> |
| 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: | 2005-05-27 13:40:49 |
| Message-ID: | 9EB50F1A91413F4FA63019487FCD251D113367@WEBBASEDDC.webbasedltd.local |
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| Lists: | pgsql-hackers |
> -----Original Message-----
> From: Manfred Koizar [mailto:mkoi-pg(at)aon(dot)at]
> Sent: 25 May 2005 20:25
> To: Manfred Koizar
> Cc: Tom Lane; Greg Stark; Bruce Momjian; Mark Cave-Ayland
> (External); pgsql-hackers(at)postgresql(dot)org
> Subject: Re: [HACKERS] Cost of XLogInsert CRC calculations
(cut)
> The most important figure is, that at MaxSpeed (/O2) 2x32 is
> almost twice as fast as CRC64 while only being marginally
> slower than CRC32.
>
> Servus
> Manfred
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