Communications support module virtual processor

The communications support module (CSM) class of virtual processors performs communications support service and communications support module functions.

The database server starts the same number of CSM virtual processors as the number of CPU virtual processors that it starts, unless the communications support module is set to GSSCSM to support single sign-on. When the communications support module is GSSCSM, the database server starts only one CSM virtual processor.

For more information about the communications support service, see Client/server communication.
Note: Support for Communication Support Module (CSM) is removed starting Informix Server 14.10.xC9 . You should use Transport Layer Security (TLS)/Secure Sockets Layer (SSL) instead.