Specify the number of networking virtual processors

Each poll thread requires a separate virtual processor, so you indirectly specify the number of networking virtual processors when you specify the number of poll threads for an interface/protocol combination and specify that they are to be run by the NET class.

If you specify CPU for the vp class, you must allocate a sufficient number of CPU virtual processors to run the poll threads. If the database server does not have a CPU virtual processor to run a CPU poll thread, it starts a network virtual processor of the specified class to run it.

For most systems, one poll thread and consequently one virtual processor per network interface/protocol combination is sufficient. For systems with 200 or more network users, running additional network virtual processors might improve throughput. In this case, you must experiment to determine the optimal number of virtual processors for each interface/protocol combination.


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