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Count of Distinct elements performance problem

Kusunam, Srinivas SKusunam at rlpt.com
Wed Aug 23 17:56:22 PDT 2006


excel distinct
Sorry I forgot to mention the environment.

 

XQuery Engine:   Data Direct

OS:                  Linux 32 bit

JVM:                  1.5.0

 

Are there any other products in the market which can handle this load? 

 

I tried with Saxon and it goes out of memory for even 1GB file on 32 bit
machine (1.8GB memory limitation) which does make sense as you said
previously Saxon needs a memory at least 3 times the size of input XML.

 

Thanks,

Srinivas

 

________________________________

From: Michael Kay [mailto:http://xquery.com/mailman/listinfo/talk] 
Sent: Wednesday, August 23, 2006 3:55 PM
To: Kusunam, Srinivas; http://xquery.com/mailman/listinfo/talk
Subject: RE:  Count of Distinct elements performance
problem

 

Did you tell us what product you are using?

 

As I mentioned, the recursive code depends heavily on optimization in
the processor - as indeed does everything, with the kind of data volumes
you are dealing with.

 

Michael Kay

http://www.saxonica.com/


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