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.

For details of these changes and configuration of servers and networks, please refer to the architecture document. (download)

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

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