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From: Sergey <semykov@yandex.ru>
To: java-user@lucene.apache.org
Subject: How to find performance bottleneck
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Date: Wed, 06 Oct 2010 14:22:06 +0400
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When running application on Windows XP 32 bit machine the search time is 0.5 second. JVM is IBM Java 5 for 32 bit.
But when running the same application on much more powerfull Windows Server 2007 64 bit machine the search time is 3 seconds. JVM is IBM Java 5 for 64 bit.

It just does not make any sense to me.
Could you help me to find what is causing such poor performance. Maybe there are some tools that I can use.

I'm using MMapDirectory for IndexSearcher. Lucene version 3.0.1.

Typical search is:
(+keywords:cat* +keyword:cat~0.5) AND ((type:black AND catalogs:"57") OR (type:white AND bflag:n AND pflag:n  ))

I'm running absolutely the same searches on both machines.

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