Guardian Procedure Calls Reference Manual (G06.25+)

System Limits
Guardian Procedure Calls Reference Manual—522629-013
J-2
Number of tape drives per
node in a labeled tape
environment
20
System-generated names
(default, 4-character form)
30,720
Names in the form $X
naa, $Ynaa,
$Z
naa, where a is alphanumeric and n
is numeric
System-generated names
(5-character form)
30,000
Names in the form $X
nnnn, $Ynnnn,
$Z
nnnn
Explicitly reserved process
names
--
$X..., $Y..., $Z..., $0, $AOPR, $CMON,
$CMP, $DM
nn (n is numeric), $IMON,
$IPB, $KEYS, $MLOK, $NCP, $NULL,
$OSP, $PM, $S, $SPLP, $SPLS,
$SSCP, $SYSTEM, $T, $TMP, $TRPM,
$TRMS, $TSCH
Table J-2. Per-Process Limits (page 1 of 2)
Limit Description
Maximum
Value Comment
Segment IDs
(SEGIDs)
Depends on
whether the
segment is
privileged,
nonprivileged,
assigned or
unassigned.
0 - 1023; reserved for customers;
nonprivileged
1024 - 2047; assigned by HP;
nonprivileged
2048 - 4095; assigned by HP; privileged
(in two ranges)
4096 -65425; unassigned; privileged
65426 -65535; reserved internally, used for
special classes of segments
Selectable segment
size
127.5 MB Prior to G05, the number of selectable
segments per process is bounded by
available aliased virtual memory. Starting
with G05, selectable segments default to
unaliased.
Size of flat segment
area
480 MB Up to 15 segments aligned on 32 MB
(region) boundaries; maximum of 128 MB
per segment (G04.00 and earlier G-series)
1120 MB G05.00 and all subsequent G-series
releases
Table J-1. System-Level Limits (page 2 of 2)
Limit Description
Maximum
Value Comment