Ports cannot be shared between server software, so multiple servers running on one machine will need their own ports. This controls how much logging Tango does. LogLevel 3 is the best to use if you're trying to debug a Tango problem, but will slow Tango down, and will eat disk space. This controls how many actions Tango will allow in a TAF file. This controls how much memory the Tango Daemon process will allow itself to consume.
Memory is consumed by variables, datasource connections, and cache.
If Tango exceeds this number, it will shut itself down with a 'process size exceeded' message and attempt to restart itself normally. This controls how long Tango will wait for a response from a database call before timing out. Note that not all databases and drivers support this functionality. This controls how many requests from a CGI Tango will allow to 'queue'. A very busy site can sometimes have so many CGIs stacked, waiting for Tango to service them, that some will get lost and orphaned.