Capacity          (Queues)

DESCRIPTION
"Capacity" represents the maximum number of bytes a system queue can hold at 
any one time. A queue is an operating system resource enabling interprocess 
communication. The "Capacity" value is configured into the operating system. 


VALUES
Sun MTPScan obtains this numeric value directly from the operating system, not
from a Sun MTP system.


INTERPRETATION
If, for some reason, the capacity of a queue is reached, the process trying to 
put a message or request on the queue must wait until another process takes a 
message or request off the queue.  This condition can cause a Sun MTP system to 
slow down.  Detect this condition by comparing the "Max Bytes" and "Bytes" 
columns to the corresponding "Capacity" column. If either of the first two
datapoints reach the "Capacity" of the queue, the queue size must be increased.
Refer to the  System Administrator's Guide for increasing the maximum size
of a system queue.


CONCLUSIONS
The "Capacity" of a queue should be monitored especially during the initial 
staging of a Sun MTP system to help determine an appropriate queue size. Resizing
system queues not only requires shutting down the Sun MTP system, but also the 
operating system as well, affecting all activity on the machine.
