[redland-dev] MainMem vs DBMS

[Irvine Keans]

Hi there,
 
I've done some tests with redland and got some unexpected results. I hope that you can help me.
 
I tried to parse 3 ontologies. Once in main memory and once in a mySQL database system.
 
The unexpected thing is, that the parsing into the DBMS take only a part of the time that parsing into main memory needs. But why?
 
Here are the results:
 
File: wordnet_similar-20010201.rdf
-> in mainmem: 50 seconds
-> in database: 15 seconds
 
File: wordnet_hyponyms-20010201.rdf
-> in mainmen: 922 seconds
-> in database: 57 seconds
 
File: GALEN.OWL
-> in mainmen: 81 seconds
-> in database: 24 seconds
 
I only changed the storage from main memory to a database connection.
 
But I was expecting, that parsing into a database take a longer time, than into main memory.
Can you help me in understanding please?
 
Thank you.
Ronny

		
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