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Logical Replication speed-up initial data - Mailing list pgsql-performance

From Nikhil Shetty
Subject Logical Replication speed-up initial data
Date
Msg-id CAFpL5VxhKgrdjT48sKSg_HJTeBp5PTmdYcjrYutdQd+ViFcR_Q@mail.gmail.com
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Re: Logical Replication speed-up initial data
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Hi Team,

We have a highly transactional system as the source of logical replication and the database size is 500GB+. We are replicating all tables from source using logical replication. 

For two tables the initial data load is very slow and it never completes even after 24hrs+ 
Table size is under 100GB and index size is around 400GB. 

How can we increase the speed of the initial data load without dropping the indexes on destination?

We increased max_sync_workers_per_subscription to 3 but it didn't help much for single tables

Thanks,
Nikhil

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