Evaluate Performance in Detail › Histograms › Image Residence Histograms › Combined CPU Usage Chart Histogram

Combined CPU Usage Chart Histogram

The following example shows a combined CPU usage chart histogram:

Histograms                           CLUSTER                            Page  17
PA Vx.x
					Friday 18-SEP-2005 00:00 to 23:59

                                            *----------------------------------*
                                            |              Legend: 1           |
                                            |                                  |
                                            |   a = SUPPLY      b = DEMAND     |
                                            |   c = NODE01                     |
                                            |   O = Cluster Utilization        |
                 COMBINED CPU USAGE CHART   |       (Scaled by CPU speed)      |
% utilized  2    ------------------------   *----------------------------------*
100 !
.
.
.
 70 !
 65 !                                                aa
 60 !                                 aa            a..a
 55 !                                a..3           ....
 50 !                                ...           a....a
 45 !                               a...a         a......
 40 !                               .....         .......
 35 !                              a.....a       a.......a
 30 !                 aaaaa        .......      a.........
 25 ! aaaaaaaaaaaaaaaa.....aaaaa aa.......a   aa..........a
 20 ! ..........................a.....OOOO.  a.............
 15 ! ...OOOO.......................OO....OOaOOOOOOOOOOOO..a       c
 10 ! ..O....O...............OOOOOOO........O............OO.aaaaaOOOa  O 4
  5 ! OO bbbbbOOOOOOOOOOOOOOObbbbbbbbbbbbb...bbbbb..bbbbbb.OOOOOObbbO   OO OOO
  0 !         bbbbbbbbcccccbb             bbb     bb      bbbb            O
    ! ---01-02-03-04-05-06-07-08-09-10-11-12-13-14-15-16-17-18-19-20-21-22-23-
                                                                             5
        Each Column represents approximately 20 minutes starting from
        18-SEP 00:00:00 to 18-SEP 23:59:00.  An "N" indicates NO DATA.

The following statements are keyed to the previous example:

1. Explanatory list of symbols in the histogram columns.
2. Percentage utilizations of the most- and least-used nodes in a cluster for a requested period.
3. Imbalance in cluster-wide CPU use (represented by periods).
4. cluster-wide averages (designated by O) for all of the nodes included in the report. Os print on top of all other symbols when coincident with another legal symbol.
5. Number of hours spanned by the reporting period. This histogram reflects a reporting period of 24 hours.