Thanks Jack. so Qtime = Sum of all prepare components + sum of all process components - Debug comp process/prepare time
In 3.6.1 the process part of Query component for the following query seems to take 8 times more time? anything missing? For most queries the process part of the Querycomponent seem to take more time in 3.6.1 This is *3.6.1 * <response> <lst name="responseHeader"><int name="status">0</int> *<int name="QTime">33</int>* <lst name="params"> <str name="debugQuery">on</str> <str name="indent">on</str><str name="start">0</str> *<str name="q">differential AND equations AND has AND one AND solution</str> * <str name="rows">10</str><str name="version">2.2</str></lst></lst> *Debug Output* * * <str name="QParser">LuceneQParser</str> <lst name="timing"> <double name="time">33.0</double> <lst name="prepare"> <double name="time">3.0</double> *<lst name="org.apache.solr.handler.component.QueryComponent"><double name="time">3.0</double></lst>*<lst name="org.apache.solr.handler.component.FacetComponent"><double name="time">0.0</double></lst><lst name="org.apache.solr.handler.component.MoreLikeThisComponent"><double name="time">0.0</double></lst><lst name="org.apache.solr.handler.component.HighlightComponent"><double name="time">0.0</double></lst><lst name="org.apache.solr.handler.component.StatsComponent"><double name="time">0.0</double></lst><lst name="org.apache.solr.handler.component.DebugComponent"><double name="time">0.0</double> </lst></lst><lst name="process"><double name="time">30.0</double> *<lst name="org.apache.solr.handler.component.QueryComponent"><double name="time">26.0</double></lst>* <lst name="org.apache.solr.handler.component.FacetComponent"><double name="time">0.0</double></lst><lst name="org.apache.solr.handler.component.MoreLikeThisComponent"><double name="time">0.0</double></lst><lst name="org.apache.solr.handler.component.HighlightComponent"><double name="time">0.0</double></lst><lst name="org.apache.solr.handler.component.StatsComponent"><double name="time">0.0</double></lst><lst name="org.apache.solr.handler.component.DebugComponent"><double name="time">4.0</double></lst> *Same query in solr 1.3* * * <lst name="responseHeader"> <int name="status">0</int> *<int name="QTime">6</int>* <lst name="params"> <str name="debugQuery">on</str><str name="indent">on</str> <str name="start">0</str><str name="q">differential AND equations AND has AND one AND solution</str> <str name="rows">10</str><str name="version">2.2</str> Debug Info <lst name="timing"> <double name="time">6.0</double> <lst name="prepare"> <double name="time">1.0</double> *<lst name="org.apache.solr.handler.component.QueryComponent"><double name="time">1.0</double></lst>* <lst name="org.apache.solr.handler.component.FacetComponent"><double name="time">0.0</double></lst><lst name="org.apache.solr.handler.component.MoreLikeThisComponent"><double name="time">0.0</double></lst><lst name="org.apache.solr.handler.component.HighlightComponent"><double name="time">0.0</double></lst><lst name="org.apache.solr.handler.component.DebugComponent"><double name="time">0.0</double></lst></lst> <lst name="process"> <double name="time">5.0</double> *<lst name="org.apache.solr.handler.component.QueryComponent"><double name="time">3.0</double></lst>* <lst name="org.apache.solr.handler.component.FacetComponent"><double name="time">0.0</double></lst><lst name="org.apache.solr.handler.component.MoreLikeThisComponent"><double name="time">0.0</double></lst><lst name="org.apache.solr.handler.component.HighlightComponent"><double name="time">0.0</double></lst><lst name="org.apache.solr.handler.component.DebugComponent"><double name="time">2.0</double> *On Mon, Sep 24, 2012 at 7:35 PM, Jack Krupansky <j...@basetechnology.com>wrote: * > Run a query on both old and new with &debugQuery=true on your query > request and look at the component timings for possible insight. > > -- Jack Krupansky > > From: Sujatha Arun > Sent: Monday, September 24, 2012 7:26 AM > To: solr-user@lucene.apache.org > Subject: Performance Degradation on Migrating from 1.3 to solr 3.6.1 > > Hi, > > On migrating from 1.3 to 3.6.1 , I see the query performance degrading by > nearly 2 times for all types of query. Indexing performance slight > degradation over 1.3 For Indexing we use our custom scripts that post xml > over HTTP. > > Any thing that I might have missed . I am thinking that this might be due > to new Tiered MP over LogByteSize creating more segment files and hence > more the Query latency .We are using Compound Files in 1.3 and I have set > this to true even in 3.6.1 ,but results in more segement files > > On optimizing the query response time improved beyond 1.3 .So could it be > the MP or am i missing something here . Do let me know > > Please find attached the solrconfig.xml > > Regards > Sujatha >
