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Lund Performance Solutions

SOS Main Option Menu

SOS Main Option Menu Screen

The SOS Main Option Menu screen contains a set (and several subsets) of options that enable the user to configure the SOS program.
To access the SOS Main Option Menu screen, enter o from any SOS display screen.


Figure 7.1 SOS Main Option Menu

Main Option Commands

To modify a main option, either temporarily or permanently:
  • Type the option command key from the SOS Main Option Menu screen and press the Enter key.
  • Enter a new parameter at the secondary command prompt. Press the Enter key.
  • Press Enter again to exit the SOS Main Options Menu screen.
  • At the Should these options be saved permanently? prompt:
  • Press the Enter key to return to the SOS program without saving the modifications permanently.
  • Type Y (Yes) to save the changes permanently and then press the Enter key.
    • Information about each of the main options is provided to assist you.

    NOTE All command keys are case-sensitive.

    Screen refresh interval in seconds

    The SOS banner shows the length of the current interval (I: mm:ss) in minutes (mm) and seconds (ss). In the following example, the banner indicates the measurements reported in the screen are updated every minute (60 seconds).


    Figure 7.2 SOS banner: current interval (I: 01:00)
    Setting the Length of the Interval
    The SOS program refreshes (updates) the performance measurement data every 60 seconds. This default can be changed to an interval ranging from 10 to 3600 seconds.

    IMPORTANT SOS runs at a very high priority. Setting a short refresh interval or updating the screen too frequently may burden the system and result in skewed performance measurements. The default setting of 60 seconds is recommended for most systems.

    To adjust the length of the interval:
  • From the SOS Main Options Menu screen, select the Screen refresh interval in seconds option. Press the Enter key.
  • At the next prompt, enter a positive integer from 10 to 3600 (seconds). Press the Enter key.
    • Updating Interval Data
    To update interval data at any time, from any SOS display, type u at the prompt.
    The current interval indicator in the SOS banner (I: mm:ss) marks the time that passed from the beginning of the interval to the second the data update occurred. The example in Figure 7.3 shows that the interval data was updated after the first 52 seconds (I: 00:52) of the interval. The interval data will be updated again according to the refresh interval rate set in the SOS Main Options Menu (refer to "Setting the Length of the Interval").


    Figure 7.3 SOS banner: current interval after update (I: 00:52)

    Display cumulative stats

    Cumulative statistics are accumulated from the instant the SOS program is started or reset until the program is either stopped or reset. By default, cumulative statistics are suppressed—only the statistics for the most recent interval are displayed.
    When cumulative statistics are enabled from the SOS Main Option Menu, they will be placed in brackets ([ ]) next to their corresponding current statistics in all tabular screens. For an example, see the Disk I/O Summary screen in Figure 7.4.


    Figure 7.4 SOS Disk I/O Summary screen (tabular display) with cumulative stats
    In instances where a cumulative statistic is greater than zero, but its closest rounding value (to the tenth) is less than 0, a less than character ([<]) will be displayed instead of an integer.
    Displaying Cumulative Statistics
    To display cumulative statistics in all tabular displays:
  • From the SOS Main Options Menu screen, select the Display cumulative stats option. Press the Enter key.
  • At the next prompt, enter Y (Yes). Press the Enter key.
    • Resetting Cumulative Statistics
    To reset the cumulative statistics in all tabular displays to zero (0), enter r at the SOS Enter command: prompt from any SOS screen. This reset function also updates the current interval (see "Updating Interval Data").

    Display Key Indicators of Performance

    The KIP line can be displayed just below the SOS banner in all SOS screens.

     
     
    KIP Line
     
     
    —

    Figure 7.5 SOS Key Indicators of Performance (KIP) line
    The configuration of the KIP line is discussed in "Key Indicators of Performance (KIP) Line".
    Displaying Key Indicators of Performance
    By default, the key indicators of performance are suppressed. To show the key indicators of performance (KIP) line in all screen displays:
  • From the SOS Main Options Menu screen, select the Display Key Indicators of Performance option. Press the Enter key.
  • At the next prompt, enter Y (Yes). Press the Enter key.

    • Display option

    The Display option determines how the GLOBAL statistics portion of the Global Summary screen is formatted. Two choices are available: graphical or tabular.
    GLOBAL statistics are discussed further in "GLOBAL".
    Changing Display Formats
    To change the GLOBAL statistics display format:
  • From the SOS Main Options Menu screen, select Display option. Press the Enter key.
  • Enter the option number (1 or 2):
  • To view a graphical display, type 1 (1-Graphic). Press the Enter key.
  • To view a tabular display, type 2 (2-Tabular). Press the Enter key.

    • Company name

    By default, the company name is not included in the SOS screens, reports or output. It can be added.
    Adding a Company Name to the SOS Banner
  • From the SOS Main Options Menu screen, select the Company name option. Press the Enter key.
  • At the next prompt, type a company name or system name (up to 43 alpha-numeric characters) to display just below the SOS banner.

    		•

    Figure 7.6 SOS Company Name example (Lund Performance Solutions)

    Detail display options (SUBMENU)

    To access the Detail display options submenu screen:
  • From the SOS Main Options Menu screen, enter the command key for Detail display options. Press the Enter key.
  • Select one of the following submenu options:
  • 1) Global display options (SUBMENU)
  • 2) Process display options (SUBMENU)
  • 3) Pulse Points display options (SUBMENU)
  • 4) User display options (SUBMENU)
  • 5) Terminal display options (SUBMENU)
    • Each of these submenus is discussed further in the next section, "Detail Display Options".

    Detail Display Options

    Detail display options Submenu Screen

    To access the Detail display options submenu screen from any SOS display screen:
  • Type o from the SOS Enter command: prompt to view the SOS Main Option Menu screen.
  • From the SOS Main Option Menu screen. select Detail display options and press the Enter key. The Detail display options submenu screen will display.

    		•

    Figure 7.7 SOS Detail display options submenu screen

    Detail display option Commands

    To open one of the Detail display submenus, use the following procedure.
  • From the Detail display options submenu screen, enter the command key number of the submenu to open.
  • Global display options (SUBMENU)
    • For information about this screen, see "Global display options Submenu Screen".
  • Process display options (SUBMENU)
    • For information about this screen, see "Process display options Submenu Screen".
  • Pulse Points display options (SUBMENU)
    • For information about this screen, see "Pulse Points display options".
  • User display options (SUBMENU)
    • For information about this screen, see "User Display Options".
  • Terminal display options (SUBMENU)
    • For information about this screen, see "Terminal Display Options".
  • Press the Enter key.

    • Global Display Options

    Global display options Submenu Screen

    To access the Global display options submenu screen from any SOS display screen:
  • Type o from the SOS Enter command: prompt to view the SOS Main Option Menu screen.
  • From the SOS Main Option Menu screen. select Detail display options and press the Enter key.
  • From the Detail display options submenu screen, select Global display options and press the Enter key. The Global display options submenu screen will display (Figure 7.8).


    • Figure 7.8 SOS Global display options submenu screen

    Global display option Commands

    To modify a global display option, either temporarily or permanently:
  • Type the option command key from the Global display options submenu screen and press the Enter key.
  • Enter a new parameter at the secondary command prompt. Press the Enter key.
  • Press Enter to exit the Global display options submenu screen.
  • Press Enter to exit the Detail display options submenu screen.
  • Press Enter to exit the SOS Main Options Menu screen.
  • At the Should these options be saved permanently? prompt:
  • Press the Enter key to return to the SOS program without saving the modifications permanently.
  • Type Y (Yes) to save the changes permanently and then press the Enter key.
    • Information about each of the global display options is provided to assist you.

    Display advice messages

    SYSTEM PERFORMANCE ADVICE messages displayed in the Global Summary screen deliver a basic interpretation of significant system performance events.


    Figure 7.9 SOS Global Summary screen: SYSTEM PERFORMANCE ADVICE messages
    Advice messages are discussed further in "SYSTEM PERFORMANCE ADVICE".
    Suppressing All Advice Messages
    To suppress all advice messages in the Global Summary screen:
  • From the Global display options submenu screen, select the Display advice messages option. Press the Enter key.
  • At the next prompt, enter N (No). Press the Enter key.

    • Display informational advice messages

    By default, SOS provides both informational and excessive use advice messages in the SYSTEM PERFORMANCE ADVICE section of the Global Summary screen.
  • An "I" in the message ID code (for example, CI01) denotes an informational advice message. Informational messages usually state current performance levels for the current interval.
  • An "E" in the message ID code (for example, ME01) denotes an excessive use advice message. This type of advice message alerts the user to a situation where system resources are overtaxed.
    • Suppressing Informational Advice Messages
    To suppress informational advice messages from the Global Summary screen:
  • From the Global display options submenu screen, select the Display informational advice messages option.
    • This option is available only when advice messages are displayed in the Global Summary screen. Press the Enter key.
  • At the next prompt, enter N (No). Press the Enter key.

    • Display memory information on global screen

    By default, the GLOBAL section of the Global Summary screen includes memory and virtual memory statistics. These statistics can be suppressed.


    Figure 7.10 SOS Global Summary screen: MEM/VM statistics
    Global memory statistics are discussed in "MEM/VM".
    Suppressing Memory Statistics
    To suppress memory statistics from the Global Summary screen:
  • From the Global display options submenu screen, select the Display memory information on global screen option, which is available only when the Global Summary screen is displayed in tabular format. Press the Enter key.
  • At the next prompt, enter N (No). Press the Enter key.

    • Display miscellaneous information on global screen

    Miscellaneous global information is provided in the GLOBAL section of the Global Summary screen. These statistics can be suppressed.


    Figure 7.11 SOS Global Summary screen: MISC statistics
    Global miscellaneous statistics are discussed further in "MISC".
    Suppressing Miscellaneous Global Statistics
    To suppress miscellaneous global statistics from the Global Summary screen:
  • From the Global display options submenu screen, select the Display miscellaneous information on global screen option, which is available only when the Global Summary screen is displayed in tabular format. Press the Enter key.
  • At the next prompt, enter N (No). Press the Enter key.

    • Display disk information on global screen

    Disk information is provided in the GLOBAL section of the Global Summary screen. This information can be suppressed.


    Figure 7.12 SOS Global Summary screen: DISK statistics
    Global disk statistics are discussed further in "DISK".
    Suppressing Disk Statistics
    To suppress disk statistics from the Global Summary screen:
  • From the Global display options submenu screen, select the Display disk information on global screen option, which is available only when the Global Summary screen is displayed in tabular format. Press the Enter key.
  • At the next prompt, enter N (No). Press the Enter key.

    • Maximum number of disks to display

    To set the maximum number of disks to display in the DISK portion of the Global Summary screen:
  • From the Global display options submenu screen, select the Maximum number of disks to display option, which is available only when the Global Summary screen is displayed in tabular format. Press the Enter key.
  • At the next prompt, enter the maximum number of disks to display (0-9999). Press the Enter key.

    • Display process information

    Process information is provided in the PROCESS SUMMARY section of the Global Summary screen.This information can be suppressed.


    Figure 7.13 SOS Global Summary screen: PROCESS SUMMARY
    Global process statistics are discussed further in "PROCESS SUMMARY".
    Suppressing PROCESS SUMMARY
    To suppress the PROCESS SUMMARY section of the Global Summary screen:
  • From the Global display options submenu screen, select the Display process information option. Press the Enter key.
  • At the next prompt, enter N (No). Press the Enter key.

    • Display workload information

    By default, information about application workloads is not included in the Global Summary screen graphical display. This information can be displayed.


    Figure 7.14 SOS Global Summary screen: WORKLOAD SUMMARY
    Workload statistics are discussed further in "WORKLOAD SUMMARY".
    Displaying Workload Summary Information
    To display workload information:
  • From the Global display options submenu screen, select the Display workload information option. Press the Enter key.
  • At the next prompt, enter Y (Yes). Press the Enter key.

    • Display only active workloads

    This Display only active workloads option is available only when workload information is displayed in the Global Summary screen.

    By default, all workloads defined in the workdefs (workload definitions) file are included in the WORKLOAD SUMMARY section of the Global Summary screen, even if they used 0.0% of the total CPU time in the current sample interval. The display can be configured to show only active workloads (workloads that used more than 0.0% of the total CPU time).
    Displaying Only Active Workloads
    To display active workloads and suppress inactive workloads in the Global Summary screen:
  • From the Global display options submenu screen, select the Display only active workloads option. Press the Enter key.
  • At the next prompt, enter Y (Yes). Press the Enter key.

    • CPU percentage required for workload display

    This option is available only when workload information is displayed in the Global Summary screen and eligibility is restricted to active workloads.

    When this option is disabled (default setting), all workloads that consumed 0.1% or more of the total CPU time in the current sample interval will be included in the WORKLOAD SUMMARY section of the Global Summary screen. A higher minimum CPU percentage can be specified.
    Resetting the Minimum CPU Requirement
    To set a new minimum CPU percentage requirement:
  • From the Global display options submenu screen, select the CPU percentage required for workload display option. Press the Enter key.
  • At the next prompt, enter a value from 0.1 to 100 percent. Press the Enter key.

    • Process Display Options