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INDICATE USER! reflects own virtual wachine. The output of this option is the same as that of the INDICATE USER ! option descr ibed under "The Class G INDICATE Command. n
INDICATE USER userid
allows the system analyst to determine the activity of other
virtual machines in terms of the resources used and occupied
and events that have taken place. Users with class E authority
can access data from the VMBLOK of any user currently logged
onto the system in their attempts to understand an overload or
poor performance situation.
The output of this option is the same as that of the INDICATE USER ! option descr ibed under liThe Class G INDICATE Command". INDICATE QUEUES displays the active users, the queues they are in, the storage
they are occupying, and the status they are in. The display
indicates those users currently dominating main storage. Users waiting in eligible lists are included in the response because
they are contending for main storage and it is only by chance
that they were not occupying main storage at the time of the
command.
The response to the INDICATE QUEUES command is as follows:
userid1 aa bb ssslttt userid2 ••• (up to 3 userids per line)
useridn
is the user identification.
aa is the eligible list or queue that the user occupies.
bb is one of the following status indicators: RU the current runuser in uniprocessor mode. In
attached processor configurations, the current
run user on the main processor.
RA in attached processor configurations, the current
runuser on the attached processor. (Not used in
uniprocessor mode).
DF in attached processor configurations, the processing
of a synchronous (program and SVC) interrupt for
this user has been deferred until the system lock is
available (not used in uniprocessor mode).
PG the user is not running because CP is attempting to
bring in a page from a paging device. 10 the user is in 1/0 wait because access to the device
is not available at the moment. EX the user is waiting for the completion of an
instruction simulation.
PS the user is in an enabled wait state for high speed 1/0 devices.
waiting to be redispatched. !Q1§: In cases where a virtual machine may be in more
than one of the above states, only one state is
displayed. The state displayed is the first one
encountered in the order of priority indicated above.
Part 2.. Control Program (CP) 107

Page of GC20-1807-7 As Updated April 1, 1981 by TNL GN25-0829
sss is a hexadecimal number indicating the number of pages
resident in real storage
ttt is a hexadecimal number indicating the working set size.
Note: The order of the users in the INDICATE QUEUES response
is as follows:
1. Q1 and Q2 users in runlist priority order (that is,
dispatching priority order).
2. Eligible list El users in scheduling priority order.
3. Eligible list E2 users in scheduling priority order.
INDICATE 1/0 provides information about conditions leading to possible 1/0 contention within the system. The response gives the userids
of all the users in I/O wait state at that instant in time,
and the address of the real device to which the most recent
virtual SIO was mapped. Because the response indicates only
an instantaneous sample, use the command several times before
assuming a condition to be persistent. If it is persistent,
run the SEEKS option of the MONITOR command to conduct a
thorough investiqation of the suggested condition.
The response to the INDICATE 1/0 option is as follows: useridl cuu userid2 cuu • •• (up to 5 userids per line)
useridn
is the user identification.
cuu indicates the real device address.
In the case where a virtual machine may have issued multiple SIOs, the response indicates the real device address
corresponding to the most recent one issued.
INDICATE PAGING WAIT is provided for installations that have 2305s as primary
paging devices and other direct access devices as secondary
paging devices. A full primary device and subsequent
allocation of paging space on the slower device may be
responsible for degradation in system performance. Use the
INDICATE PAGING WAIT option when the INDICATE QUEUES option
shows that a significant proportion of the users in queue1 and
queue2 are persistently in page wait. The response to the
command gives the userids of those users currently in page
wait and the numbers of page frames allocated on drum and on
disk.
The response to the INDICATE PAGING WAIT option is as follows:
userid 1 nnn: mmm userid2 nnn: mmm ••• (up to 4 userids per line)
useridn
is the user identification.
nnn is the hexadecimal number of pages allocated on drum for
these users. 108 IBM VM/370 System programmer!s Guide