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SQL Anywhere 12.0.0 (Français) » SQL Anywhere Server - Database Administration » Starting and connecting to your database » Client/server communications

 

Adjusting communication compression settings to improve performance

Enabling compression for one or all connections, and setting the minimum size at which packets are compressed, can improve SQL Anywhere performance in some circumstances.

To determine if enabling compression will help in your particular situation, it is recommended that you conduct a performance analysis on your particular network and using your particular application before using communication compression in a production environment. Performance results will vary according to the type of network you are using, your applications, and the data you transfer.

The most basic way of tuning compression is as simple as enabling or disabling the Compression (COMP) connection parameter on either the connection or server level. More advanced fine tuning of compression performance is available by adjusting the CompressionThreshold (COMPTH) connection parameter.

Enabling compression increases the quantity of information stored in data packets, thereby reducing the number of packets required to transmit a particular set of data. By reducing the number of packets, the data can be transmitted more quickly.

For more information about performance analysis, see Performance Monitor statistics, and sa_conn_compression_info system procedure.

 Enabling compression
 Modifying the compression threshold