Evaluate Performance in Detail › Histograms › Image Residence Histograms › Physical Memory Use Histogram

Physical Memory Use Histogram

The following example shows a physical memory use histogram:

Histograms                      DEMAND (VAX 8700)                       Page   6
							 PA Vx.x
					Tuesday 06-SEP-2005 00:00 to 23:59


                                                      *-------------------*
                                                      |    Legend: 1      |
                                                      |                   |
                                                      | m Modified List   |
                                                      | . Free List       |
                                                      | u User Ws         |
                                                      | s Tot Wss For All |
                                                      |   'System' Users  |
                         PHYSICAL MEMORY USAGE        | v VMS Allocated   |
% of memory  2           ---------------------        *-------------------*
100 ! ...........................................u............................
 95 ! ..................................uuuuuuuuuu..uuu.......................
 90 ! ................................uuuuuuuuuuuuuuuuu.......................
 85 ! ..............................uuuuuuuuuuuuuuuuuuuu......................
 80 ! ..............................uuuuuuuuuuuuuuuuuuuuu.....................
 75 ! ..............................uuuuuuuuuuuuuuuuuuuuu.....................
 70 ! .............................uuuuuuuuuuuuuuuuuuuuuuu....................
 65 ! ............................uuuuuuuuuuuuuuuuuuuuuuuuuuuuu...............
 60 ! ...........................uuuuuuuuuuuuuuuuuuuuuuuuuuuuuu...............
 55 ! ..........................uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu...............
 50 ! .........................uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu...............
 45 ! ........................uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu.............
 40 ! ..............uu.......uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu............
 35 ! u....uuuuuuuuussuuuuuuuuuuuussssssssssssssssuuuuuuuuuuuuussuuuuuuuuuuuuu
 30 ! ssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss
 25 ! vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
 20 ! vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
 15 ! vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
 10 ! vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
  5 ! vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
    ! ---01-02-03-04-05-06-07-08-09-10-11-12-13-14-15-16-17-18-19-20-21-22-23-
                                                                            3
        Each Column represents approximately 20 minutes starting from
        6-SEP 00:00:00 to  6-SEP 23:59:00.  An "N" indicates NO DATA.

The following statements are keyed to the columns in the previous example:

1. Explanatory list of units in the histogram columns.
2. Percentage of memory used.
3. Number of hours spanned by the reporting period. This histogram reflects a reporting period of 24 hours.