Help Center/ Relational Database Service_RDS for PostgreSQL/ FAQs/ Database Monitoring/ How Can I Calculate the Memory Usage of an RDS DB Instance?
Updated on 2025-06-24 GMT+08:00

How Can I Calculate the Memory Usage of an RDS DB Instance?

To check the memory usage, access the Dashboard page of RDS and select PostgreSQL from the drop-down list box in the upper part. Then you can check the memory usage of all RDS for PostgreSQL instances created by the current account.

The formula for calculating the memory usage is as follows:

Memory usage = (Total memory – (Available memory + Buffer memory + Cache memory))/Total memory