Enyang Wang created SOLR-15394:
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             Summary: Performance Issue with Solr 8.6
                 Key: SOLR-15394
                 URL: https://issues.apache.org/jira/browse/SOLR-15394
             Project: Solr
          Issue Type: Bug
      Security Level: Public (Default Security Level. Issues are Public)
    Affects Versions: 8.6.3
            Reporter: Enyang Wang


In our project, we noticed a performance issue since the migration to 8.4.1, 
when the user searches with multiple words, e.g. "Data Migration". The response 
time I measured was over 8 seconds. This issue doesn't exist with Solor 7.7.3, 
what we have tested in a test environment, in which the response time for the 
same search terms was under 2 seconds. 

The Solr 8.4.1 was then migrated to 8.6.3 later due to our awareness of 
https://issues.apache.org/jira/browse/LUCENE-9068. But the performance issue in 
case of multiple search terms could still not be solved.

Solr spec: 8.6.3

Lucene spec: 8.6.3

Java spec: 11 (OpenJDK 64-Bit Server VM 11.0.10)

I could not find any related information for Solr 8.6.3, therefore the ticket. 
I'd appreciate to receive helpful resources and further support.



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