Class of Virtual Processor

You can set the VP_class entry to specify either CPU or NET. However, the combined number of poll threads defined with the CPU VP class for all net types cannot exceed the maximum number of CPU VPS. You should carefully distinguish between poll threads for network connections and poll threads for shared memory connections, which should run one per CPU virtual processor. TCP connections should only be in network virtual processors, and you should only have the minimum needed to maintain responsiveness. Shared memory connections should only be in CPU virtual processors and should run in every CPU virtual processor.

For more advice on whether to run the poll threads on CPU or NET virtual processors, refer to the chapter on virtual processors in the IBM Informix Administrator's Guide.