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194 The Virtualization Cookbook for Red Hat Enterprise Linux 5.2

14.1 Using INDICATE and other commands

z/VM has many commands to monitor the state of the system. CP INDICATE is the most

commonly used, and there are other commands that are addressed.

14.1.1 Using the INDICATE command

z/VM has basic commands such as INDICATE. This command can be useful if there are no

other tools with more extended function present on the system, such as when undertaking a

completely new system installation. (However, command level tools should not be relied upon

for formal, long-term reporting on production systems.)

There are many INDICATE parameters that can be included as command line options. Use the

command HELP INDICATE for a basic understanding, and then press F11 for help on each

parameter.

INIDICATE LOAD

If no parameter is specified, INDICATE LOAD is the default option. There are two “flavors” of this,

depending on whether the issuing user ID has privilege class G or privilege class E. Class G

users can use INDICATE to display recent contention for system resources, as well as to

display environment characteristics and measurements of resources used by their virtual

machine.

The output from user ID with class E privilege (for example, MAINT, OPERATOR) is shown here:

==> ind load

1 AVGPROC-038% 03

2 XSTORE-000021/SEC MIGRATE-0001/SEC

3 MDC READS-000068/SEC WRITES-000001/SEC HIT RATIO-099%

4 PAGING-0031/SEC STEAL-000%

5 Q0-00006(00000) DORMANT-00357

6 Q1-00001(00000) E1-00000(00000)

7 Q2-00001(00000) EXPAN-002 E2-00000(00000)

8 Q3-00034(00000) EXPAN-002 E3-00000(00000)

10 PROC 0000-038% PROC 0001-038%

11 PROC 0002-038%

13 LIMITED-00000

The numbers in bold font refer to the descriptions that follow:

The INDICATE LOAD command gives a snapshot of current system performance. Except for the

counts of virtual machines in various queues and the limited list, the values you see here are

a smoothed average over the past 4 minutes. Areas where z/VM performance analysts tend

to focus are the following:

1 AVGPROC gives the overall processor utilization (38%, in this example). The number

following it is the number of online processors (3, in this example). The individual processor

utilization is shown on lines

10 and 11. Examine these to see if they are somewhat balanced.

There are cases where an imbalance is acceptable. This would include very low utilization

scenarios, or cases where there are not enough users ready to run virtual processors to keep

the physical processors busy. One of the processors will be a Master, all of the others

Alternate, and some imbalance may result from performing these functions.

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