bidorbuy created SOLR-11078:
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Summary: Solr query performance degradation since Solr 6.4.2
Key: SOLR-11078
URL: https://issues.apache.org/jira/browse/SOLR-11078
Project: Solr
Issue Type: Bug
Security Level: Public (Default Security Level. Issues are Public)
Affects Versions: 6.6
Environment: * CentOS 7.3 (Linux zasolrm03 3.10.0-514.26.2.el7.x86_64
#1 SMP Tue Jul 4 15:04:05 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux)
* Java HotSpot(TM) 64-Bit Server VM (build 25.121-b13, mixed mode)
* 4 CPU, 10GB RAM
Running Solr 6.6.0 with the following JVM settings:
java -server -Xms4G -Xmx4G -XX:NewRatio=3 -XX:SurvivorRatio=4
-XX:TargetSurvivorRatio=90 -XX:MaxTenuringThreshold=8 -XX:+UseConcMarkSweepGC
-XX:+UseParNewGC -XX:ConcGCThreads=4 -XX:ParallelGCThreads=4
-XX:+CMSScavengeBeforeRemark -XX:PretenureSizeThreshold=64m
-XX:+UseCMSInitiatingOccupancyOnly -XX:CMSInitiatingOccupancyFraction=50
-XX:CMSMaxAbortablePrecleanTime=6000 -XX:+CMSParallelRemarkEnabled
-XX:+ParallelRefProcEnabled -verbose:gc -XX:+PrintHeapAtGC -XX:+PrintGCDetails
-XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+PrintTenuringDistribution
-XX:+PrintGCApplicationStoppedTime
-Xloggc:/home/prodza/solrserver/../logs/solr_gc.log -XX:+UseGCLogFileRotation
-XX:NumberOfGCLogFiles=9 -XX:GCLogFileSize=20M
-Dsolr.log.dir=/home/prodza/solrserver/../logs -Djetty.port=8983
-DSTOP.PORT=7983 -DSTOP.KEY=solrrocks -Duser.timezone=SAST
-Djetty.home=/home/prodza/solrserver/server
-Dsolr.solr.home=/home/prodza/solrserver/../solr
-Dsolr.install.dir=/home/prodza/solrserver
-Dlog4j.configuration=file:/home/prodza/solrserver/../config/log4j.properties
-Xss256k -Xss256k -Dsolr.log.muteconsole
-XX:OnOutOfMemoryError=/home/prodza/solrserver/bin/oom_solr.sh 8983
/home/prodza/solrserver/../logs -jar start.jar --module=http
Reporter: bidorbuy
Attachments: compare-6.4.2-6.6.0.png
We are currently running 2 separate Solr servers - refer to screenshots:
* zasolrm02 is running on Solr 6.4.2
* zasolrm03 is running on Solr 6.6.0
Both servers have the same OS / JVM configuration and are using their own
indexes. We round-robin load-balance through our Tomcats and notice that Since
Solr 6.4.2 performance has dropped.
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