10 in I/O wait --the user is in I/O wait because access to
the device is not available at the moment. EX in instruction si.ulation wait --the user is waiting for
the completion of instruction PS in PSi wait --the user is in an enabled wait state for
high-speed I/O devices.
DF in attached processor configurations, the processing of a
synchronous (progra. or SVC) interrupt for this user has
been deferred until the system lock is available. DF is
not applicable for uniprocessor operations.
Note: In cases where a virtual .achine may be in aore 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.
sss is a hexadeci.al nu.ber indicating the number of pages resident
in real storage.
ttt is a hexadeci.al nu.ber indicating the nu.ber of pages
esti.ated by the dispatcher as the working set of this user.
Note: The lines of the above response are ordered as follows:
1. Q1 and Q2 users in runlist priority order (dispatching
priority)
2. Bligible list E1 users in scheduling priority order.
3. Eligible list E2 users in scheduling priority order.
The significance of these values is important in
perfor.ance analysis; for details see the 10 USERS IB QUEUE is issued for the QUEUES operand when userid1 xxx userid2 yyy userid1 is a user identification na.e(s).
userid2 xxx indicates the real device address. V8/37.Q syste. .§I§1!!! yyy indicates that two users are waiting for I/O to complete on the
device indicated.
Bote: In the case where a virtual machine may have issued iultiple SIOs, the response indicates the real device address
corresponding to the most recent one issued. BO USERS IN I/O WAIT is issued for the I/O operand, when appropriate.
84 '8/370 Operator's Guide

r , IALL I I!DICATE gAGINg IWAITI L .J
userid1 xxx:IYI userid2 xxx:YII userid1 is user identification name(s).
userid2
April 1, 1981
xxx are the number of pages, in hexadecimal, allocated on drum
storage for these users. IY1 are the number of pages, in hexadecimal, allocated on disk
storage for these users.
Note: One or .ore users can be indicated. This sample response IndIcates two users. If the two users shown in the response
were to execute programs of similar characteristics, then
userid1 would be expected to experience more page wait than
userid2. If users appear to have most of their pages allocated
on disk storage
8 it would be useful to know which users are
occupying most of the primarl paging device space, and whether
or not they are still active. That is, a virtual machine that
is executing a large operating system may have been allocated
large amounts of primary paging device space at IPL time but
then have become inactive. Consequently, the machine is
occupying a critical resource but is not using it. If the ALL
operand is invoked, then xxx and yyy values are given for all
users on the system. NO USERS IN PAGEWAIT is issued for the PAGING WAIT operand, when appropriate.
section 3. CP Commands 85