Scalability

This page describes the scalability of Postgres-XC.

To evaluate the scalability, we used DBT-1 benchmark with a couple of modification as follows.

• Connection to the backend is modified from ODBC to libpq to allow to put more workload.
• Columns are added to some of the tables to determine what server each tuple should go.

The following figure shows Postgres-XC's scalability via number of servers. Dotted line shows ideal scalability.

500px