Re: Need Help

[Neil Palmer <neil@xxxxxxxxxxxxxx>]

Matching record logic can be EXTREMELY fast.  Of course it's best performance
comes when sorting SORTED flat files and using the good old dual I/O buffers
with a large block size.  It is VERY fast if you are matching logical files
(where you are matching on the key fields) and the file is pretty much in
key sequence (ie. you've done a RGZPFM KEYFILE(*FILE) recently). 
(And again you want to try and use a reasonable large block size for I/O).
It's still faster than CHAINing even if the data in the indexed file is in
totally random order, although in this case you don't want to force such 
a large block size for I/O.
(Ooops - typo in second line, should be "when matching SORTED flat 
files...").



On Sat, 2 Aug 1997 boothm@earth.goddard.edu wrote:

> Now I am curious:  Aside from all of the laughing about Dave's
> punishments, how efficient is MR logic?  Is it fast? Effective? Compared
> to what?
> 
> In <199708022227.SAA28481@vixa.voyager.net>, on 08/02/97 
>    at 06:27 PM, cmassoglia@voyager.net (Charlie Massoglia) said:
> 
> 
Matching record actually does have some value.
> 
> 
CAUTION:  TO AVOID BITING CRITICISM, MAKE SURE YOU DELETE THE SOURCE FOR
> 
THIS PROGRAM WHEN YOU ARE DONE SO NOONE WILL KNOW YOU USED MATCHING
> 
RECORD LOGIC!!!
> 
> 
Charlie Massoglia, Massoglia Technical Consulting, Inc.
> 
> -- 
> -----------------------------------------------------------
> boothm@earth.goddard.edu
> -----------------------------------------------------------
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