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https://issues.apache.org/jira/browse/SOLR-11078?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16390798#comment-16390798
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Shawn Heisey commented on SOLR-11078:
-------------------------------------

bq. Would be it good to put back trie-fields in 7.3 release until issue with 
point-fields is fixed? 

Trie fields are already slated to remain available for all 7.x versions.  You 
can still use them even now.  A deprecation warning is logged when they are 
used, but it is not an error.

bq. I'd use the good old numericfield encoding.

[~thetaphi], I have no idea what's involved to do this.  Are there already 
fieldType classes in Solr that do this?  Or would some need to be created?  If 
it needs to be created, is there something available that shows how to code it, 
so we can create new types for Solr?


> 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) 
>          Components: search, Server
>    Affects Versions: 6.6, 7.1
>         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
>            Priority: Major
>         Attachments: compare-6.4.2-6.6.0.png, core-admin-tradesearch.png, 
> jvm-stats.png, schema.xml, screenshot-1.png, screenshot-2.png, 
> screenshot-3.png, solr-6-4-2-schema.xml, solr-6-4-2-solrconfig.xml, 
> solr-7-1-0-managed-schema, solr-7-1-0-solrconfig.xml, solr-71-vs-64.png, 
> solr-sample-warning-log.txt, solr.in.sh, solrconfig.xml
>
>
> 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. We have two indices per server 
> "searchsuggestions" and "tradesearch". There is a noticeable drop in 
> performance since Solr 6.4.2.
> I am not sure if this is perhaps related to metric collation or other 
> underlying changes. I am not sure if other high transaction users have 
> noticed similar issues.
> *1) zasolrm03 (6.6.0) is almost twice as slow on the tradesearch index:*
> !compare-6.4.2-6.6.0.png!
> *2) This is also visible in the searchsuggestion index:*
> !screenshot-1.png!
> *3) The Tradesearch index shows the biggest difference:*
> !screenshot-2.png!



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