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The "SolrPerformanceFactors" page has been changed by LewisJohnMcgibbney: http://wiki.apache.org/solr/SolrPerformanceFactors?action=diff&rev1=33&rev2=34 In general, adding many documents per update request is faster than one per update request. For bulk updating from a Java client, - consider using the [[StreamingUpdateSolrServer.java|StreamingUpdateSolrServer]] which streams updates over multiple connections using multiple threads. '''N.B.''' In 4.X, the StreamingSolrServer has been deprecated in favour of the ConcurrentUpdateSolrServer. + (in 3.X) consider using the [[http://lucene.apache.org/solr/api-3_6_2/index.html?org/apache/solr/client/solrj/impl/StreamingUpdateSolrServer.html|StreamingUpdateSolrServer.java]] which streams updates over multiple connections using multiple threads. '''N.B.''' In 4.X, the StreamingSolrServer has been deprecated in favour of the [[http://lucene.apache.org/solr/4_1_0/solr-solrj/index.html?org/apache/solr/client/solrj/impl/ConcurrentUpdateSolrServer.html|ConcurrentUpdateSolrServer]]. Reducing the frequency of automatic commits or disabling them entirely may speed indexing. Beware that this can lead to increased memory usage, which can cause performance issues of its own, such as excessive swapping or garbage collection.
