Queues

The Queues Screen displays the current status of the system queues that Sun MTP 
uses to communicate between its Servers. There is usually one queue per Server,
along with a few additional coordination queues. The queue facility is actually
part of the operating system, not Sun MTP. The Queues Screen contains a single 
KxScrolledList that lists the system queues used by a Sun MTP system. The column 
datapoints are:
 
   Queue         -> name of a queue (typically identifies its Server) 
   Capacity      -> maximum number of bytes a queue can hold
   Bytes         -> number bytes of currently on a queue
   Max Bytes     -> maximum number of bytes observed on a queue
   Messages      -> number of messages currently on queue
   Max Msgs      -> maximum number of messages observed on a queue
   Last Received -> last time a request was taken off a queue

Because the queues belong to operating system and not Sun MTP, this Screen cannot 
present entirely accurate information about queue values and usage because the
operating system does not provide cumulative information about its queues. 
Sun MTPScan can only get snapshot information about each queue. In other words, if 
some entries are put on and removed from the queue during an Update Interval, 
there is no way for Sun MTPScan to know that those entries were actually there; the
operating system does not record their existence. Sun MTPScan can only report on the 
state of a queue at the moment it requests information from the operating system. 

Therefore, the Queues Screen gives only a rough idea of what actually happens
with a Sun MTP system's queues. Over time, the Queues Screen should give a
relatively good idea of queue behavior. Note that the "Max Bytes" and "Max Msgs"
datapoints are calculated by Sun MTPScan, and depend on the values obtained at each 
Update Interval.
