Hi Jason, some questions .. what is your index configuration??? What is your average size form the returned fields ??? How much memory have your System ?? Do you have long fieds who is returned in the queries ? Do you have actÃvate the Highlighting in the request ? Are you using multi-value filed for filter ...
-----Mensaje original----- De: Jason Rennie [mailto:[EMAIL PROTECTED] Enviado el: jueves, 11 de septiembre de 2008 17:25 Para: solr-user@lucene.apache.org Asunto: What's the bottleneck? We have a 14 million document index that we only use for querying (optimized, read-only). When we issue queries that have few, relatively rare words, the query returns quickly. However, when the query is longer and uses more common words (hitting, say, ~1 million docs), it might take seconds to return. I'd like to know: what's the bottleneck? It doesn't seem to be disk---i/o wait times on the machine are much, much lower than on our database servers (e.g. 3% vs. 50%). Our search server is an 8-core machine and we do see cpu regularly holding above 100%, so cpu seems plausible, but would it really take that long to compute scores? We're using DisMax. There are a number of different fields that we search over (5 to be exact). We also have an fq on a single-digit status field. Does it make sense that computation time could easily exceed a second? If cpu is the bottleneck, is there anything we could do to easily trim-down computation time (besides removing common words from the query)? Jason -- Jason Rennie Head of Machine Learning Technologies, StyleFeeder http://www.stylefeeder.com/ Samantha's blog & pictures: http://samanthalyrarennie.blogspot.com/
