Using CMF MONITOR Online on multiple systems
One of the greatest benefits of the MainView window interface is the ability to control multiple local and remote systems, access different products on those systems, and compare and contrast data from different time periods--all on the same screen, all at the same time.
In fact, the MainView window interface allows you to open up to 20 windows on a single screen and control a different aspect of system performance in each window. And with the MainView window interface, you can do all of this manipulation from a single user session, rather than having to initiate multiple sessions under the control of a session manager.
For example, suppose that you are responsible for three IBM MVS™ systems: SYSA, SYSB, and SYSC. Rather than having three terminals, each devoted to a separate system, you want to survey the health of each of your systems simultaneously—all on the same screen.
Starting with SYSA, you display the SYSOVER view in window 1; SYSOVER displays an overview of all important system activity:
COMMAND ===> SCROLL ===> PAGE
CURR WIN ===> 1 ALT WIN ===>
>W1 =SYSOVER===========SYSA=====*========DDMMMYYYY==HH:MM:SS====CMF===========1
System CPU zAAP zIIP Avg Inp Avg System I/O Chan CP I/O DASD D
Name Bsy% Bsy% Bsy% Que Len InRd Pg Rte Rate %Int Bi TPI QDep Ut
SYSA 7.3 1.8 0.00 0.5 0.00 350.6 39.2 0A 1.1 4
Next, you open a second window and use the CONtext command to set that window to SYSB. ( Displaying target systems describes the CONtext command syntax in detail.) From now on, any views directed to window 2 automatically reflect the activity on SYSB—you will not have to use the CONtext command again on this system.
After displaying SYSOVER in window 2, your screen looks like the following example:
COMMAND ===> SCROLL ===> PAGE
CURR WIN ===> 2 ALT WIN ===>
>W1 -SYSOVER-----------SYSA-----*--------DDMMMYYYY--HH:MM:SS----CMF-----------1
System CPU zAAP zIIP Avg Inp Avg System I/O Chan CP I/O DASD D
Name Bsy% Bsy% Bsy% Que Len InRd Pg Rte Rate %Int Bi TPI QDep Ut
SYSA 7.3 1.8 0.00 0.5 0.00 350.6 39.2 0A 1.1 4
>W2 =SYSOVER===========SYSB=====*-=======DDMMMYYYY==HH:MM:SS====CMF===========1
System CPU zAAP zIIP Avg Inp Avg System I/O Chan CP I/O DASD D
Name Bsy% Bsy% Bsy% Que Len InRd Pg Rte Rate %Int Bi TPI QDep Ut
SYSB 39.2 0.8 0.31 0.9 0.05 591.7 39.2 0A 1.1 1
Moving on to SYSC, you open a third window, use the CONtext command to set that window to SYSC, and then display SYSOVER again in window 3. See the following example:
COMMAND ===> SCROLL ===> PAGE
CURR WIN ===> 3 ALT WIN ===>
>W1 -SYSOVER-----------SYSA-----*--------DDMMMYYYY--HH:MM:SS----CMF-----------1
System CPU zAAP zIIP Avg Inp Avg System I/O Chan CP I/O DASD D
Name Bsy% Bsy% Bsy% Que Len InRd Pg Rte Rate %Int Bi TPI QDep Ut
SYSA 7.3 1.8 0.00 0.5 0.00 350.6 39.2 0A 1.1 4
>W2 =SYSOVER===========SYSB=====*-=======DDMMMYYYY==HH:MM:SS====CMF===========1
System CPU zAAP zIIP Avg Inp Avg System I/O Chan CP I/O DASD D
Name Bsy% Bsy% Bsy% Que Len InRd Pg Rte Rate %Int Bi TPI QDep Ut
SYSB 39.2 0.8 0.31 0.9 0.05 591.7 39.2 0A 1.1 1
>W3 =SYSOVER===========SYSC=====*========DDMMMYYYY==HH:MM:SS====CMF===========1
System CPU zAAP zIIP Avg Inp Avg System I/O Chan CP I/O DASD D
Name Bsy% Bsy% Bsy% Que Len InRd Pg Rte Rate %Int Bi TPI QDep Ut
SYSC 24.2 0.4 0.71 0.9 0.05 591.7 39.2 0A 1.1 1
With just a few simple commands, you have a complete overview of all your systems. Now you can quickly spot the difference between local problems and more pervasive, serious problems—one glance can tell you whether a problem on SYSA is confined to that system or propagated across all of the systems.
Because CMF MONITOR Online windows are completely independent from each other, you can solve a problem on one system--using hyperlinks to move from view to view until you find the cause—while still monitoring your other systems.
In addition, after you arrange the windows the way you want them, you can save the entire screen for later display with the SAVESCR command. The next time you want to display the same window configuration, all you need to do is type the SCR command followed by the name you assigned to the multi-window screen. See Using-screen-definitions-to-solve-problems for more information.
Using Single System Image (SSI)
CMF MONITOR Online now allows you to see information obtained from multiple MVS images, all within a single view.
By using the Single System Image (SSI) context of ALL (which has been predefined as including all systems communicating with your PAS), you can display data from two or more systems within a single view.
For example, suppose you have two MVS images (SYSD and SYSE) connected to the PAS on a third system (SYSC). By using the SSI context of ALL, you could view device activity for all devices on all systems by typing the following command on the COMMAND line:
CONTEXT ALL *;DEV
Your view would look something like the following figure.
DEV view with SSI context ALL
- ------ System Num --- Rate Time Time Dely Dely Dely Time Time Time Util Rv
XTS1SJSC 06D23 010 0.4 582 N/A N/A 0.4 581 0.8 24.5
XTS1SJSC 06D34 010 0.0 5.9 N/A N/A 0.6 3.6 1.7 0.0
XTS1SJSC 07112 000 N/A N/A
SHK000 XTS1SJSE 49001 053 0.0 2.2 N/A N/A 0.2 2.0 0.0
SHK000 XTS1SJSC 49001 07A 0.1 3.3 N/A N/A 0.2 3.1 0.0
SHK000 XTS1SJSD 49001 07A 0.0 2.6 N/A N/A 0.2 2.4 0.0
SHK001 XTS1SJSE 49012 053 0.0 0.4 N/A N/A 0.2 0.2 0.0
SHK001 XTS1SJSC 49012 07A 0.0 0.4 N/A N/A 0.2 0.2 0.0
SHK001 XTS1SJSD 49012 07A 0.0 0.4 N/A N/A 0.2 0.2 0.0
This screen displays three lines of information for each device, one line for each of the three systems connected to the PAS.
To see a list of all of the systems that you have access to from the system you are currently using, you can use the PLEXOVER view in the PLEXMGR product. For more information about PLEXMGR, see Displaying target systems.
Alternately, from the EZMZOS menu you could choose Environment Settings under the Utilities option and then choose Select SSI Context under the Change System option. This option allows you to display a view that lists all valid SSI contexts and lets you change the context for all of the views that you display.
You can use SSI to monitor all aspects of a sysplex, with either one row of data for each system or data summarized across all MVS images in the sysplex.
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