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Postfix Documentation
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Example 1: Healthy queue

When looking at just the incoming and active queues, under normal conditions (no congestion) the incoming and active queues are nearly empty. Mail leaves the system almost as quickly as it comes in or is deferred without congestion in the active queue.

$ qshape        (show 
incoming and 
active queue status)

                 T  5 10 20 40 80 160 320 640 1280 1280+
          TOTAL  5  0  0  0  1  0   0   0   1    1     2
  meri.uwasa.fi  5  0  0  0  1  0   0   0   1    1     2

If one looks at the two queues separately, the incoming queue is empty or perhaps briefly has one or two messages, while the active queue holds more messages and for a somewhat longer time:

$ qshape incoming

                 T  5 10 20 40 80 160 320 640 1280 1280+
          TOTAL  0  0  0  0  0  0   0   0   0    0     0

$ qshape active

                 T  5 10 20 40 80 160 320 640 1280 1280+
          TOTAL  5  0  0  0  1  0   0   0   1    1     2
  meri.uwasa.fi  5  0  0  0  1  0   0   0   1    1     2
Postfix Documentation
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