Sybase IQ uses operating system threads to process queries and loads.
The default settings of options that control thread use are usually sufficient to provide good performance. In some cases, you may need to change these settings. See Performance and Tuning Guide > Manage System Resources > The Process Threading Model to understand how Sybase IQ uses threads. See Performance and Tuning Guide > Manage System Resources > Options for Tuning Resource Use to set server options that control thread use.