Default for Broker Attribute POLL
Setting this attribute to YES means
you can use more than the maximum number of TCP/IP connections per communicator (see Maximum TCP/IP Connections per Communicator under Broker Resource Allocation).
However, POLL=YES increases CPU consumption,
so for performance reasons we recommend POLL=NO unless you really need the additional TCP/IP connections. See POLL under Broker Attributes.
The default for this attribute under z/OS will change from YES to NO in the next release.
