CNZZ043I   MSGFLD Message Rates text

Instantaneous Message Rates
nnnnnnnnn messages in sssssssss seconds mmmmmmmmm msg/sec
% of time at msg rate  ccccccccc messages w/most common rate
 100.000%|
  96.000%|
  92.000%| 
  88.000%| 
  84.000%| 
  80.000%| 
  76.000%| 
  72.000%|
  68.000%| 
  64.000%|
  60.000%| 
  56.000%| 
  52.000%|
  48.000%| 
  44.000%|
  40.000%| 
  36.000%| 
  32.000%| 
  28.000%|
  24.000%| 
  20.000%| 
  16.000%|
  12.000%| 
   8.000%| 
   4.000%|
        0+--+--+--+--+--+--+--+--+-------------------
          0          1  8 64 1K 8K messages/second

     Suggested threshold for p1% is t1 
     Suggested threshold for p2% is t2
     Suggested threshold for p3% is t3 
     Suggested threshold for p4% is t4 
     Suggested threshold for p5% is t5 

Message CNZZ043I is issued in response to the DISPLAY MSGFLD,MSGRATE command and provides information about the message rates observed by the Message Rate Monitoring function. The graph's Y-axis shows the percentage of time spent on a message rate, and the X-axis who's instantaneous message rates (in messages / second). The X-axis scale is logarithmic with each character position being a factor of two, greater than the previous position in the rightward direction. Tick marks are provided at 8X intervals. The Y-axis is of variable length, with a default length of 25 lines. Any value from 0 to 999 is acceptable on the command, but it will be adjusted to the range 8 to 200. The actual value used is selected to provide readable increments on the Y-axis.

Each vertical bar of asterisks in the graph is rightward cumulative. That is each bar represents not only the fraction of time at its own rate, but the fraction of time with a lesser rate. (A bar's own contribution to the time at a given message rate is therefore the difference between its height and the height of its immediate leftward neighbor).

A vertical line (|) indicates the most common message rate. On the X-axis, the minimum and maximum message rates recorded are indicated (by the > and < symbols, respectively). These are indicated on either side of the mean message rate. The percentage of messages occurring at the maximum message rate is usually quite small and cannot be visible unless the resolution of the graph is improved by increasing the number of lines in the graph.

The graph must have a characteristic "S" shape to it caused by relatively few messages occurring at very low message rates (the bottom left of the "S" curve) and very few messages occurring at very high message rates (the top right of the "S" curve).

The graph presents instantaneous message rates that are determined from the inter-arrival times of the messages. Small inter-arrival times result in high instantaneous message rates. Large inter-arrival times result in low instantaneous message rates. A high message rate on the graph does not necessarily imply that multiple, consecutive messages were issued at that rate. It is quite possible for a high message rate to be indicated without Message Flood Automation being triggered. (It is multiple, consecutive, high message rate messages that trigger Message Flood Automation).