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From "Philipp Breuss" <>
Subject Lucene Benchmark - Wintel faster than Unix (?)
Date Mon, 04 Apr 2005 11:09:59 GMT

we were doing Lucene Perfomance tests with the same index and the same
amount of data on Sun Unix machines and Windows machines with following

Index: 3.1 Mio documents
Index in RAM

Server 1:
Sun V880, 4 CPUs, 8 GB RAM; OS: Unix

Server 2:
HP Proliant DL560 G1", 4 CPUs mit je 2,7 GHz, 1 GB RAM; OS Windows 2000

Average search time Server 1: 5,5
Average search time Server 2: 1,6s

The windows machine (server 2) is about 5 times faster than the quite a bit
more expensice unix machine (server 1). 

Can anybody explain this? 
Did anybody make similar experiences? 
Which HW+OS confirgurations deliver the best perfomance?


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