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Reindexing prudent?
Message
From
24/12/2002 19:13:06
 
 
To
24/12/2002 18:57:35
General information
Forum:
Visual FoxPro
Category:
Databases,Tables, Views, Indexing and SQL syntax
Miscellaneous
Thread ID:
00735440
Message ID:
00735715
Views:
8
>SNIP
>>>
>>>Given especially #2 above I believe that any .CDX that regularly has lots of INSERTION activity AND a TAG primarily used in the application that has a wide range in those INSERTIONS will benefit from regular reindexing. Such reindexing will result in a smaller .CDX with the need for fewer reads necessary to access all pertinent index records.
>>
>>You're addressing the speed issue now. I guess that tests could verify/falsify your hypothesis. My hypothesis is that there will be no significant gain in speed.
>
>That may well be the case with today's hardware having super-fast average access times and large on-board cache. But I would still opt for smaller and more 'consolidate' being faster, even if now it is limited more to the theoretical than the practical. I do think that this would be quite difficult to benchmark accurately with today's premium hardware, though the point might be better confirmed using, say a PII 90mhz and an old 1gig HD.
>>
>>And how about the other IMO false perception, correctness?
>
>If it's faster it is more "correct" as I see it. If its smaller it's more "correct" as I see it.
>So I would say that corectness is TRUE, not false.
>
>UPDATE: I just re-read your original, and in the context of VFP7SP1 I wouldn't bother with reindexing either. But in all other releases, I would.

OOPS. I just reacted on your initial reply. :)

>cheers
>
>>
>>>cheers
>>>
>>>>
>>>>
>>>SNIP
Groet,
Peter de Valença

Constructive frustration is the breeding ground of genius.
If there’s no willingness to moderate for the sake of good debate, then I have no willingness to debate at all.
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If you find this message rude or offensive or stupid, please take a step away from the keyboard and try to think calmly about an eventual a possible alternative explanation of my message.
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