adnanhamdussalam opened a new issue, #1882:
URL: https://github.com/apache/cloudberry/issues/1882

   Hello Team,
   
   I would appreciate your assistance in investigating a performance issue we 
are experiencing following our migration to Cloudberry.
   
   Source Environment
   Platform: Greenplum 6.26.3
   Deployment: Single VM
   Primary Segments: 28
   RAM: 755 GB
   Swap: 63 GB
   Database Size: Approximately 21 GB
   
   Target Environment
   Platform: Cloudberry 2.1.0
   Migration Method: CBCopy
   Deployment: 2 Worker Nodes
   Total Primary Segments: 8
   RAM per Node: 440 GB
   Swap per Node: 129 GB
   Database Size: Approximately 19 GB
   Issue
   
   Although the database size is relatively small and the target environment 
has sufficient memory resources, we have observed significantly slower query 
performance after the migration to Cloudberry compared to the source Greenplum 
environment.
   
   We would appreciate your guidance on:
   
   Potential causes of the performance degradation.
   Recommended post-migration validation and tuning activities.
   Any Cloudberry-specific configuration parameters that should be reviewed.
   Best practices for comparing execution plans and segment utilization between 
the two environments.
   
   Please let us know if you require any additional information, such as query 
execution plans, cluster configuration details, or system statistics.
   
   Thank you for your support and assistance.


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