pgbench_accounts is the only table that should grow to the point where partitioning can benefit the tpcb-like benchmark.
It looks like you have customized the pgbench schema that partitions the other pgbench tables, so you can use a custom script to initialize the data. IMO, If there is a good reason to allow the other pgbench tables to be partitioned, that may be better to think about. I am not sure there is though. Regards, Sami Amazon Web Services (AWS)
