How many connections can smxNS support?
The number of connections is configured by NCONNS which could be set as high as 254. This is a compile time setting that specifies the number of connection data structures, so setting an appropriate low value will conserve memory. Currently, the connection data structure is around 290 bytes in size. The current default setting for NCONNS is 6 for RAM limited systems. We increased this from 4 when we added to the number of clients and servers in the demo application. NCONNS should be set to the maximum number of concurrent TCP and UDP connections, plus an additional number to allow for TCP connections in the TIME_WAIT state. TCP client applications typically enter the TIME_WAIT state on closing, and the default timeout in smxNS for this state is a relatively abbreviated 7.5 seconds. Still, if you are turning over connections quickly, then you should budget a few extra connections here. Also note that servers that use the Sockets API backlog feature will consume an additional connection
