Page of GC20-1821-3 As Updated April 1, 1981 by TNt GN25-0840 printing abend dumps for operating systems 5
reducing VM/370 paging activity for 5 SIO instructions, reducing I/O operations for 6
specifyinq consoles for 14-15
testing and updating VM/370 virtual
machine 51-68
usinq IPt command to restore contents <'2 74 8- 4 2 • 1
using IPt command to restore contents 42
v irt ual dev ices
defining with VM/370 directory
control statements 46 VM/370 I/O management for 16 VMCF, to communicate/transfer data
between virtual machines 7
virtual machine assist
effect on virtual machine paging
performance 5
performance option, specifying for
virtual machines 36 STFIRST option, permits issuing of SET STBYPASS nnnnnK command (5748-XE1) 41
v irt ual machine
effect on performance 33-34
effect on performance (5748-XE1) 34.5-34.6
virtual machine communication facility VMCF) Virtual Machine Facility/370 (see VM/370) virtual storage preservation support VM/370 Basic System Extensions program product)
virtual storage preservation support (.2148-X]1) VM/370 System Extensions
program product)
virtual TeU, example, controlling remote
terminals 30 virtual timer, updating under VM/370 41 VMA (§gg virtual machine assist) VMAP (VM/370 Performance/Monitor Analysis
proqram)
measurinq workload performance of both VM/370 and virtual machines 35
MONITOR command, reduce and analyze data
from 37
shadow tables
reducing and printing monitor records
for (.2148=!]1)' 34.3,34.4 VMCF (virtual machine communication
facility)
data transfer and communication between
virtual machines, brief description and
reference 7 VMFtOAD, using for VM/370 virtual machine,
example 59-60 VMSAVE option OPTION control statement
automatically saving contents of
virtual machine (2148-XX8) 42.1
automatically saving contents of virtual machine (2148-XE1) 42.1 VM/VS handshaking
autopoll, required for DOS/VS 8
for DOS/VS and DOS/VSE 70 ISAM option required for 7 VM/370 performance, effect on 35 VS 1
enhancements in nonpaging mode
114-115
major discussion 110-115 using nonpaging mode 112-114 VM/370 (Virtual Machine Facility/370) machine)
alternate path support, for virtual
machines 19-20 alternating between CMS and operating
system, to create and test programs
24-26 ASP, using in virtual machine 31-33
BTAM autopoll channel programs, checking
and bypassing for 8
channel checks, handling under VM/370 13-14
components, brief description 2
error recording, for operating systems
4
error records, accessing for operating
systems 4
generating operating systems under,
advantages of 38 I/O instructions, reducing number issued
by virtual machine 6 I/O management, sharing devices between
virtual machines 16 I/O waits, effect of processing on
operating systems under VM/370 12
multiple-access system, using in virtual
machine 26-31
page waits, effect of processing on
operating systems under VM/370 11-12
paging
effect on application programs 4
reducing for virtual machines 5
performance
measuring for 37
paging factors affecting virtual
machines 5
performance factors, for operatinq
system run in virtual machine 35-37
performance guidelines 33-37
performance guidelines 34.5-37
performance options, for system analyst
and general user 36
reserve/release support, for operatinq
system in virtual machine 20-23 service programs, using 120-121 spooling, closing spool files 13 System Extensions Program Product,
performance additions (description)
36-37
system generation
defining alternate path support for 20 def ining CTCA for ASP virtual machine
32
defining hardware features for
alternate path support 20 unsupported devices, how to use 4
Index 149

Page of GC20-1821-3 As Updated April 1, 1981 by TNL GN25-0840 utility programs, usinq 120-121 virtual devices, processing I/O operations for virtual machine
operating systems 16 VM/VS handshaking, operating systems
supported by 9 VM/370 Basic System Extensions program
product
enhanced 3270 support, control 3270 by DIAGNOSE code X'58' 11
full screen support, display size by DIAGNOSE code· X'58' 11
virtual storage preservation support DIAGNOSE code X'40' 11 VMSAVE option 42.1 VM/370 linkage enhancements
for DOS/VS via Advanced Functions Program product 9,70 VM/370 options
defininq
for virtual machine operating systems 40-42 for virtual machine operating systems 40 for virtual machine operating systems 40-42.2 VM/370 performance/Monitor Analysis Program VMAP) VM/370 System Extensions program product
shadow table maintenance support
activa"te TOD clock interface by DIAGNOSE code X'70' (5748-XE1) 11 MVS low-address protection by DIAGNOSE code X'6C' 11 VM/370 system Extensions program product
enhanced 3270 support, control 3270 by DIAGNOSE code X'58' 11
full screen support, display size by DIAGNOSE code X'58' 11
shadow table maintenance support 33-34.5
virtual storage preservation support
DI AGNOSE code X' 40' (.§74§-XE1) 11 VMSAVE option 42.1 VM/370 virtual machine
accessing CMS 52.1
accessing devices 55
configuration for 52-54
verifying (example) 56-57,61,62 CP disks, formatting and allocating
53-54
creating directory, example 58
directory entry example 51
dump processing, using IPCS 54 IPL, time-of-day clock restriction 54 IPL under VM/370 54
operation under VM/370 54-56
spooling, handling double spooling
operations 55
system generation, defining DMKSYS and DMKRIO modules 53
terminal session example 56-68
testing and updating 51-68 2305 devices, using for paging 52.1 VSAM, files, using T-disk space for 18 VS1 virtual machine; VM/370) BTAM autopoll channel programs,
bypassing and checking for under VM/370 8
handshaking, using without 114
nonpaging mode
initiation examples 113-114 VM/370 considerations 112-114
nucleus, nonpaging mode considerations
112-114
system generation under VM/370 recommendations 109-110 VM/370 recommendations 109-110 3850 MSS considerations 115
virtual machine, directory entry
examples 125 VM/VS handshaking, functions provided
for virtual machine 110-115 VS2 virtual machine; VM/370) Release 1 W workload
performance factors
for operating systems run under VM/370 34- 3 5
for operating systems run under VM/370 34.7-35
virtual machine, definition of 35
2 2305 3
dedicating to virtual machines, using
DEDICATE control statement 45
for VM/370 virtual machine, paging usage
(discussion) 52.1 370E option, OPTION control statement,
enabling/disabling MVS/System Extensions
support 42.2 3850, VS1, system generation considerations
for 115 1S0 IBM VM/370 operating Systems a virtual Machine