Hi All,

I am using Dense vectors in SOLR and facing slowness in it. Each search is
taking 10-25 seconds. I want to reduce the time to 5 seconds (or less
ideally).

Following configurations are being used.


   1. *SOLR Version:* 9.3.0
   2. *Lucene Version:* 9.7.0
   3. *Vector Dimensions*: 384
   4. *Total Shards:* 5
   5. *Number of Vectors (Per shard*): 43209158
   6. *JVM for each Instance:* 35GB
   7. *TopK: *1000  (Getting 1000 from each shard)
   8. *Rows: *1000
   9. *Vector Field Schema:  *<fieldType name="knn_vector_384"
   class="solr.DenseVectorField" hnswMaxConnections="20" knnAlgorithm="hnsw"
   vectorDimension="384" similarityFunction="cosine" hnswBeamWidth="40"/>
   10. *Stored*: False
   11. *WebServer:* Apache Tomcat
   12. *System Specs*:  Linux ( CPU:64, RAM:488 GB, OS:Ubuntu 20.04.6 )

Any sort of help/clue will be appreciated.



Regards,


Iram Tariq | Software Architect

NorthBay

Direct:  +1 (902) 329-7329

iram.ta...@northbaysolutions.net

www.northbaysolutions.com

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