removes the rest. The estimate is based on a moving average of the number

of WAL files used in previous checkpoint cycles. The moving average

is increased immediately if the actual usage exceeds the estimate, so it

accommodates peak usage rather average usage to some extent.

accommodates peak usage ratherthanaverage usage to some extent.

<varname>min_wal_size</> puts a minimum on the amount of WAL files

recycled for future usage; that much WAL is always recycled for future use,

even if the system is idle and the WAL usage estimate suggests that little