Horton

Re: Cost of XLogInsert CRC calculations

Mark Cave-Ayland <m.cave-ayland@webbased.co.uk>

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From: "Mark Cave-Ayland" <m.cave-ayland@webbased.co.uk>
To: "'Christopher Kings-Lynne'" <chriskl@familyhealth.com.au>, "'Simon Riggs'" <simon@2ndquadrant.com>
Cc: "'Tom Lane'" <tgl@sss.pgh.pa.us>, "'Bruce Momjian'" <pgman@candle.pha.pa.us>, <pgsql-hackers@postgresql.org>
Date: 2005-05-12T12:48:48Z
Lists: pgsql-hackers 
> -----Original Message-----
> From: Christopher Kings-Lynne [mailto:chriskl@familyhealth.com.au] 
> Sent: 12 May 2005 02:46
> To: Simon Riggs
> Cc: Mark Cave-Ayland (External); 'Tom Lane'; 'Bruce Momjian'; 
> pgsql-hackers@postgresql.org
> Subject: Re: [HACKERS] Cost of XLogInsert CRC calculations
> 
> 
> >>perhaps the CRC-32 routines could be written in in-line assembler
> > 
> > 
> > If you can do this, step right up. :-)
> > 
> > Best Regards, Simon Riggs
> 
> Surely there's an open source code floating around somewhere?
> 
> Chris


Hi Chris,

I've found some x86 MASM sources using Google, but nothing in GCC-style
in-line assembler. It would be good to see how this compares in terms of
speed with the code generated by GCC.


Kind regards,

Mark.

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