Red Hat LINUX VIRTUAL SERVER 4.6 - ADMINISTRATION Manuale di Installazione Scaricare il pdf (Pagina 262)

242 z/VM and Linux on IBM System z: The Virtualization Cookbook for Red Hat Enterprise Linux 6.0

EDLWRK9 Q3 AP 00002372/00002334 .... .1107 A02

EDLWRK5 Q3 IO 00002376/00002376 .... .1205 A01

EDLWRK14 Q3 AP 00002426/00002323 .... .1238 A02

EDLLIB19 Q3 IO 00001226/00001100 .... .1309 A02

EDLWRK19 Q3 AP 00002322/00002298 .... .1705 A00

EDLWRK15 Q3 AP 00002839/00002781 .... .2205 A02

EDLWRK1 Q3 AP 00002969/00002935 .... .2491 A02

This is another class E command and displays the virtual processors associated with a given

user ID (a single virtual machine may have multiple virtual processors), what queue (dispatch

list, eligible list, or limit list) they are in, and what state they are in. This is a snapshot in time.

Again you want to check this output to make sure there are no virtual machines in the eligible

list. Normal virtual processors in the dispatch list will be Q

(x=1,2,3). The eligible list would

be marked as E

The third column in the example also gives the state of the virtual processor. This can be

helpful to get an idea of how the virtual processors might be constrained. Virtual processors

that are actually running in the snapshot period are marked with RNN where NN is the

processor number they are on. An R without a number means the virtual processor is ready to

run but there is no available processor. (Note: the virtual machine that issues the INDICATE

command will always be one of the running machines).

Other states are documented in the help for IND Q EXP. One does not have to be concerned

about the other columns unless detailed analysis is required or when IBM support requests it.

Also, always remember that it is just a snapshot in time, so repeating this command often

over time can give a more accurate picture of your z/VM system. A single snapshot cannot be

regarded as indicative.

14.1.2 Using other basic commands

Some other useful basic commands are briefly mentioned. All examples are shown from the

MAINT user ID. The results will be different for users with fewer privileges.

Getting help

To get help on the system use the HELP command. Sometimes it is hard to find help for

exactly the command you are looking for. Some useful HELP commands are as follow

==> help // for basic help

==> help menus // for menu of all z/VM help menus

==> help cp menu // for a menu of all CP commands

==> help cpquery // for a menu of all CP QUERY command

==> help cpset // for a menu of all CP SET commands

Determining who is logged on

To see who is logged on to the system, use the QUERY NAMES command. For example:

==> q n

FTPSERVE - DSC , LINUX04 - DSC , LINUX03 - DSC , LINUX02 - DSC

LINUX01 - DSC , S11S1CLN - DSC , DTCVSW2 - DSC , DTCVSW1 - DSC

VMSERVR - DSC , VMSERVU - DSC , VMSERVS - DSC , TCPIP - DSC

OPERSYMP - DSC , DISKACNT - DSC , EREP - DSC , OPERATOR - DSC

MAINT -L0003

VSM - TCPIP

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