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Message Posted: Thu, 07 Feb 2008 @ 09:26:15 GMT


     
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Subj:   Re: Dealing with concentrated values in the data
 
From:   Dieter Noeth

Christian Schiefer wrote:

  For case 1:  


  This is 10% meaning 10% skew, which is also not "too" bad. For a FTS this means a 10% penalty vs. a perfectly distributed table. I don't know the size of your system, but 10% of ( 10M rows x 127 Bytes ) = 127MB "additional" work for 1 AMP does also look not too bad.  


10% skew?

On a 100 AMP system there should be about 1% on each AMP, but 10% is 10 times as much.


Dieter



     
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