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https://issues.apache.org/jira/browse/SOLR-13350?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17735586#comment-17735586
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Ishan Chattopadhyaya edited comment on SOLR-13350 at 6/21/23 7:39 AM:
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bq. Did a performance testing on this suite: 
https://github.com/fullstorydev/solr-bench/blob/master/suites/stress-facets-local.json.
 Querying performance is about 24x slower! :-o Seems like some obvious 
bottleneck, that I'll be working on chasing down.

Seems like running a faceting query causes a massive slowdown (26 seconds, as 
opposed to 300ms), but running a scores (need scores) query first, and then 
firing a follow up faceting query (using the cached docset from the previous 
step) seems to be quick and fast. I'm looking into why this could be happening.


was (Author: ichattopadhyaya):
bq. Did a performance testing on this suite: 
https://github.com/fullstorydev/solr-bench/blob/master/suites/stress-facets-local.json
Querying performance is about 24x slower! :-o Seems like some obvious 
bottleneck, that I'll be working on chasing down.

Seems like running a faceting query causes a massive slowdown (26 seconds, as 
opposed to 300ms), but running a scores (need scores) query first, and then 
firing a follow up faceting query (using the cached docset from the previous 
step) seems to be quick and fast. I'm looking into why this could be happening.

> Explore collector managers for multi-threaded search
> ----------------------------------------------------
>
>                 Key: SOLR-13350
>                 URL: https://issues.apache.org/jira/browse/SOLR-13350
>             Project: Solr
>          Issue Type: New Feature
>            Reporter: Ishan Chattopadhyaya
>            Assignee: Ishan Chattopadhyaya
>            Priority: Major
>         Attachments: SOLR-13350.patch, SOLR-13350.patch, SOLR-13350.patch
>
>          Time Spent: 3h
>  Remaining Estimate: 0h
>
> AFAICT, SolrIndexSearcher can be used only to search all the segments of an 
> index in series. However, using CollectorManagers, segments can be searched 
> concurrently and result in reduced latency. Opening this issue to explore the 
> effectiveness of using CollectorManagers in SolrIndexSearcher from latency 
> and throughput perspective.



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