This may be related to SOLR-10130.
Am 20.02.2017 um 14:06 schrieb ~$alpha`:
> 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.
