http://simplericity.com/tags/performance/ Reducing software entropy en Eirik Bjørsnøs Fri, 02 Jan 2009 11:02:56 GMT Pebble (http://pebble.sourceforge.net) http://backend.userland.com/rss http://simplericity.com/2008/02/15/1203030013411.html <p>Following <a href="http://lucene.apache.org/#24+January+2008+-+Lucene+Java+2.3.0+available">the release of Lucene 2.3.0</a> on January 24th, I decided to upgrade an application I'm developing. The <a href="http://svn.apache.org/repos/asf/lucene/java/tags/lucene_2_3_0/CHANGES.txt">change log</a> promised several improvements in indexing performance. </p> <p> My application uses Lucene to index moderately complex information about events. Testing the application with Lucene 2.2.0 I found that a full reindex of 80.000 events stabilized on 164 seconds after a few rounds to make sure the JVM and caches were warmed up. </p> <p> After upgrading to 2.3.0 and switching IndexWriter.setMaxBufferedDocs() to the new IndexWriter.setRAMBufferSizeMB() I started a reindex again to measure the difference. </p> <p> So how long did it take to reindex 80.000 events in Lucene 2.3.0? </p> <p> <strong>35 seconds</strong> </p> <p> That's <i>470 percent faster!</i> </p> <p> So thanks to the Lucene team for the great work with this release. These guys continue to impress me. </p> Java http://simplericity.com/2008/02/15/1203030013411.html#comments http://simplericity.com/2008/02/15/1203030013411.html Thu, 14 Feb 2008 23:00:13 GMT