Example Using Simple Character Plot

The following example shows the kind of display which will be generated by the 'PLOTDET' command: a detailed display based on data from the current redisplay buffer, like the example on the preceding page, but using ordinary display characters for plotting instead of GDDM graphics.
Figure 1. Detailed performance history display using simple plot
 FCX105      CPU nnnn  SER nnnnn  Interval HH:MM:SS - HH:MM:SS    Perf. Monitor

                        T: % total CPU    o: SSCH rate/s
 400+
1000|                                           **                    *   * 
    |                                       * *      * 
    |   *        *     *       ** *      *   * *  **  *        **    *  ** 
    + **  *    *      * **       *  * *   *     *      ** *  *    * *  * 
    |    * *  * *   **     *  *      * **  *     *         *     * 
    |       **     *      *  *                           *  * *    * 
    |             *         * 
 200+
 500|                                   o        o  o        o     oo 
    |   o  o    o      oo oo   o o    oo oo o  oo  o o  o o   ooo o  o  ooo 
    | oo oo oo o oo oo   o  ooo o  ooo     o oo   o   oo o oo    o    oo 
    +         o    o  o           o 
    |
    |
    |
   0+------------+-------------+------------+-----------+-------------+---+--->
  14:01        14:32         15:00        15:31       16:01         16:32 :41

 Command ===> _
 F1=Help  F10=Left  F11=Right  F12=Return

This display was generated by entering the command 'PLOTDET CPU IO/S', i.e. it shows the total CPU load and the total I/O rate for the system.

Note that there are two big differences between the output created by the PLOTDET command and the previous GRAPHDET example, in addition to the obvious difference in the graphic aspect:
  1. If sufficient data are available in the redisplay buffer, i.e. if it's size has been increased from the default 120 entries by means of the 'FC MONCOLL REDISP nnn' command, the remainder of the buffer contents can also be displayed graphically simply by shifting the screen window to the left or right, using either the 'LEFT' and 'RIGHT' sub-commands, or the corresponding PF-keys.
  2. If the most recent data have been selected for display (default), the plot shown will automatically be updated with each new measurement. If you can spare a display terminal, you could so have a continuous graphic display of some key performance variables.
These features are available only with the detailed plots generated by the PLOTDET sub-command, but not with GDDM graphics generated by the GRAPHDET command.