On Thu, Jun 10, 2021 at 12:42 AM Don Seiler <don@xxxxxxxxx> wrote: > > I'm told other factors contribute to this additional memory requirement, such as max_connections, wal_buffers, etc. I'm wondering if anyone has been able to come up with a reliable method for determining the HugePages requirements for a PG cluster based on the GUC values (that would be known at deployment time). It also depends on modules like pg_stat_statements and their own configuration. I think that you can find the required size that your current configuration will allocate with: SELECT sum(allocated_size) FROM pg_shmem_allocations ;
