solr4 - Perfomance issue on solr 4.8 server -


performance issue on solr 4.8 server.

cpu % utilization has been high when receives more search requests site, solr server not responding.

index size of solr core 45gb.

please find solr server details (solr info url response details) below: solr-spec-version "4.8.0" solr-impl-version "4.8.0 1589874 - thetaphi - 2014-04-24 20:54:59" lucene-spec-version "4.8.0" lucene-impl-version "4.8.0 1589874 - thetaphi - 2014-04-24 20:38:58" jre version "1.7.0_79" processors 16 memory
free "1.6 gb" total "3.9 gb" max "3.9 gb" used "2.3 gb (%58.6)"

systemloadaverage 30.32 committedvirtualmemorysize 65003704320 (60gb+) freephysicalmemorysize 31435997184 freeswapspacesize 8579280896 processcputime 1160371710000000 totalphysicalmemorysize 63459581952 totalswapspacesize 8589930496 openfiledescriptorcount 161 maxfiledescriptorcount 60000

please give tuning solr 4.8 server.


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