Page of GC20-1821-3 As Updated April 1, 1981 by TNL GN25-0840 single processor mode
enabling and disabling for VM/370 138-138 .. 2
for dedicated processor
effect on shadow table bypass
function for V=R users (5748-XE1) 34
error recording considerations 138.2 VM/370 dumping procedures <.2148-XEj} 138.2
single-user virtual machines (see batch virtual machine) SIO instructions, reducing number executed
by virtual machines 6 SLD (second level directory)
reducing entries read, for DOS/VS virtual machine 73 SPECIAL control statement
examples
defining devices with special I/O protocol (caution) 46
specifying a device as primary
console 15
specifying a remote terminal as
secondary console 15-16 specifying virtual CTCA for ASP virtual machines 32
unique considerations, for virtual
machine operating systems 45 SPOOL control examples
defining devices with special I/O protocol (caution) 46 defining VM/370 virtual machine 51
spool devices, accessing, by VM/370 virtual
machine 55
spool files
closing, using VM/VS handshaking 114
defining, for OS/VS virtual machine 128
spooling
double spoolinq operations, handling for VM/370 virtual machine 55
for operating systems run under VM/370 12-13
spooling devices, dedicating to virtual
machines, using DEDICATE control statement 44 stage I
for OS/VS system generation under VM/370 execution in CMS virtual machine 122
execution in OS/VS virtual machine
123
input preparation 121-122
processing in CMS virtual machine
121
stage II
for as/vs system qeneration under VM/370 execution 124
input preparation 123
processing 123
standard label cylinders, DOS/VS virtual
machine, to access system residence volume
83-84
starter system
for as/vs system generation under VM/370 loading/restoring 119-120 volume initialization 117-118 STFIRST option OPTION control statement
permits user to issue SET STBYPASS nnnnnK command 41
shadow table bypass note for V=R users (5148::1E1) 34
storage levels in a VM/310 system, printing
dumps for virtual storage operating
systems 5
storage size, specifying, for VS1 virtual
machine 109 string switch, VM/310 alternate path
support for 19-20 SVC interruptions
handling under VM/370 41
handling under VM/370 42 SVS switched lines, defining for multiple
access-virtual machine 29 SYSRES (§ee-system residence volume) System Extensions Program product, for VM/370, performance additions
(description) 36-31
system generation as/iS; VM/370) system programs, developing and testing
f
using OS/VS virtual machine 137
system residence volume
T
for DOS/VS virtual machine
accessing 82-84
sharing between machines 72,83
for OS/VS virtual machine
accessing 126-121
sharing between machines 109 tape devices, summary of VM/310 reserve/release effect on 22-23
T-disks, defining and using for virtual
machines 17-18
teleprocessing lines, accessing, by VM/310 virtual machine 55 temporary disk space, obtaining for virtual
mach ines 18
terminals
dial-up, supporting with multiple-access
virtual machine 29
local, using with multiple-access
virtual machine 21
remote
used by multiple-access virtual
machine 21
using virtual TCU to control
(example) 30 supporting with both VM/310 and
multiple-access systems, how to connect
to 29
test system (TESTSYS) virtual machine,
directory entry example 49
testing
communications system, using
multiple-access virtual machines 29 VM/370 in a virtual machine 51-68
third level storage, definition 5
time-of-day clock, VM/370 virtual machine
restriction 54,62
Index 147
Page of GC20-1821-3 As Updated April 1, 1981 by TNL GN25-0840 time-sharing systems, performance, emphasizing response time 37
transferring output, between CMS and
operating system, technique for 24-25 TSO multiple-access virtual machine, directory entry example two-channel switch, VM/370 alternate path
support for 19-20 two-channel switch additional feature, alternate path support for 19-20 U unit record devices
for spooling, dedicating to virtual
machine operating systems 44
virtual, use by DOS/VS virtual machine
84
unsupported devices
dedicating to virtual machines, by using
DEDICATE control statement 44
defining, by usinq SPECIAL control
statement 45
using under VM/370 4 USER control statement, example, defining VM/370 virtual machine 51
utility proqrams, VM/370, using 120-121 V V=R virtual=real) VIRT=REAL option directory entry example, specifying for
multiple-access virtual machine 49
double pagina eliminating for virtual machine
operating systems 41-42
eliminating for virtual machine
operating systems (5748-XE1) 42-42.1
virtual=real
jobs executing under nonpaging mode, in VS1 virtual machine 113
performance option, specifying for
virtual machines 36
virtual control units, caution, specifying
devices with special I/O protocol 46
virtual devices
defining with VM/370 directory control
statements 46
states or conditions under VM/370 16
virtual disk minidisk)
virtual interval timer assist, DOS/VS, accounting under VM/370 73-74
virtual lines, defining for multiple-access
virtual machine 26-28
virtual machine VM/370) adding I/O devices without using real
devices, using SPECIAL control
statement 45 allocating resources 1-2
alternate path support for 19-20 ASP, using under VM/370 31-33
configurations
for alternating between operating
systems 26
for VM/370 virtual machine 52-54
measuring workload performance 34-35
measuring workload performance 34.7-35
performance factors for operating
systems run under VM/370 33-34
performance factors for operating
systems run under VM/370 34.7-35
dedicated channels, specifying 17
dedicated devices, using as alternative
to dedicated channels 17
definition of 1
directory entries
creating and updating 38-39
specifying control statements 40-45 directory entry examples AUTOLOG1 46-48 AUTOLOG1 for multiple systems 48 AUTOLOG1 for single system 47 CMS for use with OS/VS 116 DOS 82 DOS/VS 75,82
for alternating between operating
systems 25 MFT 124
multiple-access 28,49 MVS 125-126
as/vs 116
test system (TESTSYS) 49 TSO multiple-access 49 VM/370 virtual machine 51 VS 1 125
do uble paging
eliminating by use of VIRT=REAL option 41-42
eliminating by use of VIRT=REAL option 42-42.1
error recovery, provided by operating
system in 16 I/O interruptions, processed by
operating system in 16
multiple-access, defining and using under VM/370 26-31
operating systems supported under VM/370 2
options
defining 40-42 defining 40 defining 40-42.2 optional services for operating
systems run under VM/370 6-7
specifying 7
performance
guidelines for operating systems run
in 33-37
guidelines for operating systems run
in 34.5-37
measuring for 37 148 IBM VM/370 Operating Systems in a Virtual Machine
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