Randomly slow response times for range queries
Hello all, I am running two range queries on a double value as filter queries using Solr 1.4, and for the most part am getting great performance (qTime 100ms). However, at certain QPS, I start getting very slow queries (2000+ms). I've tried this using the new trie fields, and using standar sdouble fields, and have had similar results. Is there a known issue with randomly slow queries when doing range searches with Solr? Thanks for any support you can offer. -- View this message in context: http://lucene.472066.n3.nabble.com/Randomly-slow-response-times-for-range-queries-tp1441724p1441724.html Sent from the Solr - User mailing list archive at Nabble.com.
Re: Randomly slow response times for range queries
Well, throw enough queries at any server and it'll slow right down, so how many are we talking here? But no, there're no SOLR issues like this that I know of. That said, you could be getting cache thrashing. You could be getting garbage collection by the JVM. You could be executing commits somehow (are you updating?) and causing your caches to be refilled. You could be The admin/stats.jsp page (also linked from the admin page) can give you some clues, look particularly for evictions most the way down the page. Best Erick On Wed, Sep 8, 2010 at 3:11 PM, oleg.gnatovskiy crooke...@gmail.com wrote: Hello all, I am running two range queries on a double value as filter queries using Solr 1.4, and for the most part am getting great performance (qTime 100ms). However, at certain QPS, I start getting very slow queries (2000+ms). I've tried this using the new trie fields, and using standar sdouble fields, and have had similar results. Is there a known issue with randomly slow queries when doing range searches with Solr? Thanks for any support you can offer. -- View this message in context: http://lucene.472066.n3.nabble.com/Randomly-slow-response-times-for-range-queries-tp1441724p1441724.html Sent from the Solr - User mailing list archive at Nabble.com.
Re: Randomly slow response times for range queries
Well I am only sending about 50 QPS at it at the time that it temporarily slows down, and then it's able to get all the way up to 100 QPS+ with no problems (until the next random queries). I suppose it could be the garbage collection. Is there a good way to limit this? -- View this message in context: http://lucene.472066.n3.nabble.com/Randomly-slow-response-times-for-range-queries-tp1441724p1443086.html Sent from the Solr - User mailing list archive at Nabble.com.
Re: Randomly slow response times for range queries
Also, does anyone know the best precisionStep to use on a trie field (float) definition to achieve optimal performance? -- View this message in context: http://lucene.472066.n3.nabble.com/Randomly-slow-response-times-for-range-queries-tp1441724p1443096.html Sent from the Solr - User mailing list archive at Nabble.com.
