Thread:Extension talk:Lucene-search/Speed performance tuning for Lucene-search extension/reply

Have you split your index into frequently searched namespaces and other namespaces (e.g. main vs rest)? This should make the index much smaller and heavily decrease the median time. Some searches will take longer however (if a user searched all of the content). Also note that 10k req/s is quite large. At wikimedia we get maybe 500 req/s.