The machine notes file contains recommended values that you use to configure operating-system resources. Use these recommended values when you configure the operating system on each node within your parallel-processing platform.
If the recommended values for the database server differ significantly from your current environment, consider modifying your operating-system configuration. For more information, see your IBM Informix: Performance Guide.
On some operating systems, you can specify the amount of shared memory allocated to the database server. The amount of available memory influences the values that you can choose for the shared-memory parameters in your configuration file. In general, increasing the space available for shared memory enhances performance. You might also need to specify the number of locks and semaphores.
For background information on the role of the UNIX kernel parameters, see Managing Shared Memory.
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