Issues with solr settings while migrating from solr 4.0 to solr6.0. Issue Faced: My CPU consumption goes to unacceptable levels. ie. load on solr4.0 is between 6 to 10 while the load on solr 6 reaches 100 and since its the production i rolled back quickly.
My Solr4 setting - Running on tomcat - JVM Memory : 16GB - 24 core cpu - JVM settings : - JVM Runtime Java HotSpot(TM) 64-Bit Server VM (24.45-b08) - Processors 24 - Args : Paths mentioned here **My Solr6 setting** - Running on jetty - JVM Memory : 20GB - 32 core cpu - JVM settings : - Oracle Corporation Java HotSpot(TM) 64-Bit Server VM 1.8.0_45 25.45-b02 - Processors 32 - Args - DSTOP.KEY=solrrocks - DSTOP.PORT=7983 - Djetty.home=/usr/local/solr-6.4.1/server-Djetty.port=8983 - Dlog4j.configuration=file:/usr/local/solr-6.4.1/example/resources/log4j.properties - Dsolr.install.dir=/usr/local/solr-6.4.1-Dsolr.log.dir=/usr/local/solr-6.4.1/example/techproducts/solr/../logs - Dsolr.log.muteconsole - Dsolr.solr.home=/usr/local/solr-6.4.1/example/techproducts/solr-Duser.timezone=US/Eastern - XX:+AggressiveOpts - XX:+CMSParallelRemarkEnabled - XX:+CMSScavengeBeforeRemark - XX:+ParallelRefProcEnabled - XX:+PrintGCApplicationStoppedTime - XX:+PrintGCDateStamps - XX:+PrintGCDetails - XX:+PrintGCTimeStamps - XX:+PrintHeapAtGC - XX:+PrintTenuringDistribution - XX:+UseCMSInitiatingOccupancyOnly - XX:+UseConcMarkSweepGC - XX:+UseGCLogFileRotation - XX:-UseSuperWord - XX:CMSFullGCsBeforeCompaction=1 - XX:CMSInitiatingOccupancyFraction=70 - XX:CMSMaxAbortablePrecleanTime=6000 - XX:CMSTriggerPermRatio=80 - XX:GCLogFileSize=20M - XX:MaxTenuringThreshold=8 - XX:NewRatio=2 - XX:NumberOfGCLogFiles=9 - XX:OnOutOfMemoryError=/usr/local/solr-6.4.1/bin/oom_solr.sh 8983 /usr/local/solr-6.4.1/example/techproducts/solr/../logs - XX:PretenureSizeThreshold=64m - XX:SurvivorRatio=15 - XX:TargetSurvivorRatio=90-Xloggc:/usr/local/solr-6.4.1/example/techproducts/solr/../logs/solr_gc.log-Xms21g-Xmx21g-Xss256k-verbose:gc What i looking for My guess its related to gc setting of jetty as i am not expert in jetty(java8).please help how to tune these settings. Also how should i chosoe these values or how to to debug these issue ? -- View this message in context: http://lucene.472066.n3.nabble.com/Sorl-6-with-jetty-issues-tp4321291.html Sent from the Solr - User mailing list archive at Nabble.com.