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HP OpenVMS System Management Utilities Reference Manual
HP OpenVMS System Management Utilities Reference
Manual
In this case, the OpenVMS system allocates a total of approximately
6,291,456 bytes of nonpaged pool. Of this amount, the system divides
2,097,152 bytes among the RADs that are not the base RAD. The system
then assigns the remaining 4,194,304 bytes to the base RAD.
Note
The system actually rounds up to an even number of pages on each RAD.
In addition, the base RAD is never assigned a value less than the
smaller of the value of NPAGEDYN and 4 megabytes.
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On AlphaServer GS series processors on OpenVMS systems prior to Version
7.3-1, system managers frequently saw pool expansion that increasing
NPAGEDYN did not reduce. This problem was caused by leaving NPAGERAD at
its default value of 0.
Starting with OpenVMS Version 7.3-1, when NPAGERAD is 0 (the default),
the system calculates a value to use for NPAGERAD with the following
formula:
Base RAD memory
NPAGEDYN * (1- --------------- )
Total memory
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This calculation gives more pool to the non-base RADs than before and,
therefore, reduces the expansion of non-base RADs.
NPAGEVIR (A, G)
NPAGEVIR defines the maximum size to which NPAGEDYN can be increased.
If this value is too small, the system can hang. If NPAGEVIR is too
large, the result is a penalty of 4 bytes per extra page on VAX and 8
bytes per extra page on Alpha and I64.
For the benefit of OpenVMS VAX systems with limited physical memory,
AUTOGEN logs a warning message in its report if NPAGEDYN exceeds 10
percent of physical memory or if NPAGEVIR exceeds 33 percent of
physical memory.
AUTOGEN also limits its own calculated value for NPAGEDYN to 20 percent
of physical memory, and limits NPAGEVIR to 50 percent of physical
memory. These calculated values are adequate for most workstations and
systems with 16 or fewer megabytes of physical memory. If your system
requires a larger value, you can override the AUTOGEN calculated values
by setting higher values in MODPARAMS.DAT.
NPAG_AGGRESSIVE (D)
(Alpha and I64) NPAG_AGGRESSIVE is the percentage of packets on a
nonpaged pool lookaside list that remain after the list is trimmed
during aggressive reclamation.
NPAG_BAP_MAX
(Alpha and I64) NPAG_BAP_MAX is the size in bytes of the bus
addressable pool (BAP) that the system creates under normal
circumstances.
See also NPAG_BAP_MIN.
NPAG_BAP_MAX_PA
(Alpha and I64) NPAG_BAP_MAX_PA is the highest physical address in
megabytes that is allowed in bus addressable pool (BAP).
NPAG_BAP_MIN
(Alpha and I64) NPAG_BAP_MIN is the size in bytes of the bus
addressable pool (BAP) that the system creates when memory resources
are unusually constrained.
NPAG_BAP_MIN_PA
(Alpha and I64) NPAG_BAP_MIN_PA specifies the lowest physical address
in megabytes that is allowed in bus addressable pool (BAP).
NPAG_GENTLE (D)
(Alpha and I64) NPAG_GENTLE is the percentage of packets on a nonpaged
pool lookaside list remaining after the list is trimmed during gentle
reclamation.
NPAG_INTERVAL (D)
(Alpha and I64) NPAG_INTERVAL is the number of seconds between passes
of nonpaged pool gentle reclamation.
NPAG_RING_SIZE
(Alpha and I64) NPAG_RING_SIZE represents the number of entries in the
ring buffer.
PAGEDYN (A,F,G,M)
PAGEDYN sets the size of the paged dynamic pool in bytes. The specified
value is rounded down to an integral number of pages. Each page of
paged dynamic pool adds 8 bytes of permanently resident memory to the
system page table; the paged dynamic pool has no other direct memory
requirements.
The paged dynamic pool is used to allocate storage for shared logical
names, resident image headers, known file list entries, and RMS
file-sharing structures. Substantial amounts of space for the pool can
be overallocated with little effect on system performance.
The size of the paged pool can grow dynamically up to the maximum size
that this parameter specifies.
PAGFILCNT (G)
On VAX systems, PAGFILCNT defines the maximum number of page files that
can be installed.
On Alpha and I64 systems, beginning in OpenVMS Version 7.3, this
parameter is obsolete.
PAGTBLPFC
PAGTBLPFC specifies (in pages) the maximum number of page tables to
read to satisfy a fault for a nonresident page table.
This special parameter is used by HP and is subject to change. Do not
change this parameter unless HP recommends that you do so.
PAMAXPORT (D)
PAMAXPORT specifies the maximum port number to be polled on each CI and
DSSI. The CI and DSSI port drivers poll to discover newly initialized
ports or the absence/failure of previously responding remote ports.
A system does not detect the existence of ports whose port numbers are
higher than this parameter's value. Thus, set this parameter to a value
that is equal to or greater than the highest port number being used on
any CI or DSSI connected to the system.
You can decrease this parameter to reduce polling activity if the
hardware configuration has fewer than 16 ports. For example, if the CI
or DSSI with the largest configuration has a total of 5 ports assigned
to port numbers 0 through 4, you could set PAMAXPORT to 4.
If CI or DSSI devices are not configured on your system, this parameter
is ignored.
The default for this parameter is 15 (poll for all possible ports 0
through 15). HP recommends that you set this parameter to the same
value on each cluster computer.
PANOPOLL (D)
Disables CI and DSSI polling for ports if set to 1. (The default is 0.)
When PANOPOLL is set, a computer does not discover that another
computer has shut down or powered down promptly and does not discover a
new computer that has booted. This parameter is useful when you want to
bring up a computer detached from the rest of the cluster for checkout
purposes.
PANOPOLL is functionally equivalent to uncabling the system from the
DSSI or star coupler. This parameter does not affect OpenVMS Cluster
communications by LAN.
The default value of 0 is the normal setting and is required if you are
booting from an HSC controller or if your system is joining an OpenVMS
Cluster. This parameter is ignored if no CI or DSSI devices are
configured on your system.
PANUMPOLL (D)
PANUMPOLL establishes the number of CI and DSSI ports to be polled each
polling interval. The normal setting for PANUMPOLL is 16.
On systems with less powerful CPUs, the parameter may be useful in
applications sensitive to the amount of contiguous time that the system
spends at IPL 8. Reducing PANUMPOLL reduces the amount of time spent at
IPL 8 during each polling interval, while increasing the number of
polling intervals needed to discover new or failed ports.
If CI or DSSI devices are not configured on your system, this parameter
is ignored.
PAPOLLINTERVAL (D)
Specifies, in seconds, the polling interval the CI port driver uses to
poll for a newly booted computer, a broken port-to-port virtual
circuit, or a failed remote computer.
This parameter trades polling overhead against quick response to
virtual circuit failures. HP recommends that you use the default value
for this parameter.
HP recommends that you set this parameter to the same value on each
cluster computer.
PAPOOLINTERVAL (D)
Specifies, in seconds, the interval at which the port driver checks
available nonpaged pool after a pool allocation failure.
This parameter trades faster response to pool allocation failures
against increased polling overhead. HP recommends that you use the
default value for this parameter.
If CI or DSSI devices are not configured on your system, this parameter
is ignored.
PASANITY (D)
PASANITY controls whether the CI and DSSI port sanity timers are
enabled to permit remote systems to detect a system that has been hung
at IPL 8 or above for 100 seconds. It also controls whether virtual
circuit checking gets enabled on the local system. The TIMVCFAIL
parameter controls the time (1-99 seconds).
PASANITY is normally set to 1 and should be set to 0 only when you are
debugging with XDELTA or planning to halt the CPU for periods of 100
seconds or more.
PASANITY is only semidynamic. A new value of PASANITY takes effect on
the next CI or DSSI port reinitialization.
If CI or DSSI devices are not configured on your system, this parameter
is ignored.
PASTDGBUF (A)
The number of datagram receive buffers to queue initially for the
cluster port driver's configuration poller. The initial value is
expanded during system operation, if needed.
Memory Channel devices ignore this parameter.
PASTIMOUT (D)
The basic interval at which the CI port driver wakes up to perform
time-based bookkeeping operations. It is also the period after which a
timeout is declared if no response to a start handshake datagram has
been received.
If CI or DSSI devices are not configured on your system, this parameter
is ignored.
The default value should always be adequate.
PE*
PE1, PE2, PE3, PE4, PE5, PE6 are reserved for HP use only. These
parameters are for cluster algorithms and their usages can change from
release to release. HP recommends using the default values for these
special parameters.
PFCDEFAULT (A,D)
On VAX systems during execution of programs, PFCDEFAULT controls the
number of image pages read from disk per I/O operation when a page
fault occurs. The PFCDEFAULT maximum default value is 127 512-byte
pages.
On Alpha and I64 systems during execution of programs, PFCDEFAULT
controls the number of image pagelets read from disk per I/O operation
when a page fault occurs. The PFCDEFAULT maximum default value is 2032
512-byte pagelets (127 8192-byte Alpha and I64 pages).
The read I/O operations can take place from an image file or from the
page file. The actual size of the cluster can be less than PFCDEFAULT,
depending on the size of image sections and the pattern of page
references.
The value should not be greater than one-fourth the default size of the
average working set to prevent a single page fault from displacing a
major portion of a working set. Too large a value for PFCDEFAULT can
hurt system performance. PFCDEFAULT can be overridden on an
image-by-image basis with the CLUSTER option of the OpenVMS linker.
PFN_COLOR_COUNT
(Alpha and I64) PFN_COLOR_COUNT specifies the number of buckets
(colors) into which all members of the zeroed page list and all
unencumbered members of the free page list are sorted. OpenVMS Alpha
systems might derive a preferred page color from a request to map a
given virtual page and attempt to map that virtual page to a PFN of
matching "color." This results in less variance in which
cache blocks are used when accessing that page. This might or might not
improve performance, depending on the application.
This special parameter is used by HP and is subject to change. Do not
change this parameter unless HP recommends that you do so. If you
increase this parameter, you must also increase the ZERO_LIST_HI system
parameter.
PFRATH (A on Alpha and I64,D,M)
PFRATH specifies the page fault rate above which the limit of a working
set is automatically increased. The unit of measure is the number of
faults per 10 seconds of processor time. At a setting of 120, for
example, the system automatically increases the limit of a working set
if it is faulting more than 120 pages per 10 seconds. Decreasing the
value of this parameter tends to increase the limits of the working
sets, while increasing its value tends to decrease their limits.
On VAX systems, the default value is 120 page faults every 10 seconds.
On Alpha and I64 systems, the default value is 8 page faults every 10
seconds.
PFRATL (A,D,M)
PFRATL specifies the page fault rate below which the limit of a working
set is automatically decreased. The unit of measure is the number of
faults per 10 seconds of processor time. At a setting of 1, for
example, the system automatically decreases the limit of a working set
if it is faulting less than 1 page every 10 seconds.
Increasing the value of this parameter tends to decrease the limits of
the working sets, while decreasing its value tends to increase their
limits.
PHYSICAL_MEMORY (A)
(Alpha and I64) PHYSICAL_MEMORY specifies the amount of physical memory
available for use. The default setting is --1, which equates to all
memory in the system. Decreasing this parameter allows you to test
smaller configurations of memory without having to remove memory boards.
This special parameter is used by HP and is subject to change. Do not
change this parameter unless HP recommends that you do so.
PHYSICALPAGES (A)
(VAX only) PHYSICALPAGES sets the maximum number of physical pages of
memory to be used on the system. Decreasing this parameter allows you
to test smaller configurations of memory without the need to remove
memory boards.
This special parameter is used by HP and is subject to change. Do not
change this parameter unless HP recommends that you do so.
PIOPAGES (A,D)
PIOPAGES specifies the size of the process I/O segment, which holds
data structures and buffer pool space for RMS to use when it handles
I/O that involves process-permanent files. Once PIOPAGES is reset in
SYSGEN, any new process receives the changed value.
Beginning with OpenVMS Version 7.2, the default value has been raised
to 575. The setting has been raised to accommodate the increased
demands for process-permanent memory that result from changes made to
RMS file-naming parsing in Version 7.2.
This special parameter is used by HP and is subject to change. Do not
change this parameter unless HP recommends that you do so.
PIXSCAN (A,D)
PIXSCAN specifies the number of process index slots scanned each second
for computable or computable-outswapped processes. These processes
receive an automatic priority boost for 1 quantum, unless the priority
of the currently executing process is greater than 15. The priority
boost is done to avoid potential deadlocks on the system.
This special parameter is used by HP and is subject to change. Do not
change this parameter unless HP recommends that you do so.
POOLCHECK (D)
This special parameter is used by HP and is subject to change. Do not
change this parameter unless HP recommends that you do so.
POOLCHECK is used to investigate frequent and inexplicable failures in
a system. When POOLCHECK is enabled, pool-checking routines execute
whenever pool is deallocated or allocated.
Two loadable forms of SYSTEM_PRIMITIVES.EXE are available at boot time.
The default image, which contains no pool-checking code and no
statistics maintenance, is loaded when POOLCHECK is set to zero. When
POOLCHECK is set to a nonzero value, the monitoring version of
SYSTEM_PRIMITIVES.EXE, which contains both pool-checking code and
statistics maintenance, is loaded.
Setting the SYSTEM_CHECK parameter to 1 has the effect of setting
POOLCHECK to %X616400FF. For further information about pool checking,
refer to the OpenVMS VAX Device Support Manual, (which is archived).
POOLCHECK is a DYNAMIC parameter. However, for a change in its value to
have any effect, POOLCHECK must be non-0 at boot time (to load the
monitoring version of SYSTEM_PRIMITIVES.EXE).
POOLPAGING
POOLPAGING enables (1) paging of pageable dynamic pool.
This special parameter is used by HP and is subject to change. Do not
change this parameter unless HP recommends that you do so.
POWEROFF (D)
POWEROFF enables or disables software requests to the console firmware
to remove power from the system. This parameter should normally be
turned ON (1) to allow software to make power-off requests. However,
POWEROFF can be set to OFF (0) to disable software power-off requests.
If firmware or hardware support for the power-off request is not
implemented, the shut-down procedure will leave the system halted but
fully powered.
PQL_DASTLM (D,G)
PQL_DASTLM sets the default limit on the number of pending ASTs for a
process created by the Create Process ($CREPRC) system service or the
DCL command RUN (Process).
PQL_DBIOLM (D,G)
PQL_DBIOLM sets the default buffered I/O count limit for the number of
outstanding buffered I/O operations permitted to a process created by
the Create Process ($CREPRC) system service or the DCL command RUN
(Process).
PQL_DBYTLM (D,G)
PQL_DBYTLM sets the default buffered I/O byte count limit for the
amount of buffered space available to a process created by the Create
Process ($CREPRC) system service or the DCL command RUN (Process).
PQL_DCPULM (D,G)
PQL_DCPULM sets the default CPU time limit for a process created by the
Create Process ($CREPRC) system service or the DCL command RUN
(Process). PQL_DCPULM specifies the time limit in increments of 10
milliseconds.
The default value of 0 imposes no limit on CPU time usage and is
typically the correct value for this parameter.
PQL_DDIOLM (D,G)
PQL_DDIOLM sets the default direct I/O limit for a process created by
the Create Process ($CREPRC) system service or the DCL command RUN
(Process).
PQL_DENQLM (D,G)
PQL_DENQLM sets the default enqueue limit for a process created by the
Create Process ($CREPRC) system service or the DCL command RUN
(Process).
PQL_DFILLM (D,G)
PQL_DFILLM sets the default open file limit for a process created by
the Create Process ($CREPRC) system service or the DCL command RUN
(Process).
PQL_DJTQUOTA (D)
PQL_DJTQUOTA sets the default job table byte count quota for a process
created by the Create Process ($CREPRC) system service or the DCL
command RUN (Process). PQL_DJTQUOTA specifies the number of bytes of
paged pool allocated to the job table. The default value is usually
adequate, unless a large number of job logical names or temporary
mailboxes are used.
PQL_DPGFLQUOTA (A on VAX,D,G)
PQL_DPGFLQUOTA sets the default page file quota for a process created
by the Create Process ($CREPRC) system service or the DCL command RUN
(Process). HP recommends that this parameter not be smaller than the
PQL_DWSEXTENT parameter.
PQL_DPRCLM (D,G)
PQL_DPRCLM sets the default subprocess limit for a process created by
the Create Process ($CREPRC) system service or the DCL command RUN
(Process).
PQL_DTQELM (D,G)
PQL_DTQELM sets the default number of timer queue entries for a process
created by the Create Process ($CREPRC) system service or the DCL
command RUN (Process).
PQL_DWSDEFAULT (A,G)
PQL_DWSDEFAULT sets the default working set size for a process created
by the Create Process ($CREPRC) system service or the DCL command RUN
(Process).
PQL_DWSEXTENT (A,D,G)
PQL_DWSEXTENT sets the default working set extent for a process created
by the Create Process ($CREPRC) system service or the DCL command RUN
(Process).
PQL_DWSQUOTA (A,D,G)
PQL_DWSQUOTA sets the default working set quota for a process created
by the Create Process ($CREPRC) system service or the DCL command RUN
(Process).
PQL_MASTLM (D,G)
PQL_MASTLM sets a minimum limit on the number of pending ASTs for a
process created by the Create Process ($CREPRC) system service or the
DCL command RUN (Process).
PQL_MBIOLM (D,G)
PQL_MBIOLM sets the minimum buffered I/O limit for a process created by
the Create Process ($CREPRC) system service or the DCL command RUN
(Process).
PQL_MBYTLM (D,G)
PQL_MBYTLM sets the minimum buffered I/O byte limit for a process
created by the Create Process ($CREPRC) system service or the DCL
command RUN (Process).
PQL_MCPULM (D,G)
PQL_MCPULM sets the minimum CPU time limit in increments of 10
milliseconds for a process created by the Create Process ($CREPRC)
system service or the DCL command RUN (Process).
PQL_MDIOLM (D,G)
PQL_MDIOLM sets the minimum direct I/O limit for a process created by
the Create Process ($CREPRC) system service or the DCL command RUN
(Process).
PQL_MENQLM (D,G)
PQL_MENQLM sets the minimum limit on the number of locks that can be
queued at one time by a process created by the Create Process ($CREPRC)
system service or the DCL command RUN (Process).
PQL_MFILLM (D,G)
PQL_MFILLM sets the minimum open file limit for a process created by
the Create Process ($CREPRC) system service or the DCL command RUN
(Process).
PQL_MJTQUOTA (D)
PQL_MJTQUOTA sets the minimum job table byte count quota for a process
created by the Create Process ($CREPRC) system service or the DCL
command RUN (Process).
PQL_MPGFLQUOTA (A on VAX,D,G)
On VAX systems, PQL_MPGFLQUOTA sets the minimum page file quota for a
process created by the Create Process ($CREPRC) system service or the
DCL command RUN (Process). HP recommends that this parameter be no
smaller than PQL_MWSEXTENT.
On Alpha and I64 systems, PQL_MPGFLQUOTA sets the minimum pagelet file
quota for a process created by the Create Process ($CREPRC) system
service or the DCL command RUN (Process).
PQL_MPRCLM (D,G)
PQL_MPRCLM sets the minimum subprocess limit for a process created by
the Create Process ($CREPRC) system service or the DCL command RUN
(Process).
PQL_MTQELM (D,G)
PQL_MTQELM sets the minimum number of timer queue entries for a process
created by the Create Process ($CREPRC) system service or the DCL
command RUN (Process).
PQL_MWSDEFAULT (A,G)
PQL_MWSDEFAULT sets the minimum default working set size for a process
created by the Create Process ($CREPRC) system service or the DCL
command RUN (Process).
This value overrides a smaller quantity that is set for a user in
AUTHORIZE.
PQL_MWSEXTENT (A,D,G)
PQL_MWSEXTENT sets the minimum working set extent for a process created
by the Create Process ($CREPRC) system service or the DCL command RUN
(Process).
This value overrides a smaller quantity set for a user in AUTHORIZE.
PQL_MWSQUOTA (A,D,G)
PQL_MWSQUOTA sets the minimum working set quota for a process created
by the Create Process ($CREPRC) system service or the DCL command RUN
(Process).
This value overrides a smaller quantity set for a user in AUTHORIZE.
PRCPOLINTERVAL (A on Alpha and I64,D)
PRCPOLINTERVAL specifies, in seconds, the polling interval used to look
for Systems Communications Services (SCS) applications, such as the
connection manager and mass storage control protocol disks, on other
nodes. All discovered nodes are polled during each interval.
This parameter trades polling overhead against quick recognition of new
systems or servers as they appear.
PRIORITY_OFFSET
PRIORITY_OFFSET specifies the difference in priority required by the
scheduler for one process to preempt the current process. A value of 2,
for example, means that if the current process is executing at priority
1, a computable process at priority 2 or 3 is not allowed to preempt
the current process. However, a priority 4 or higher process can
preempt the current process. This mechanism affects only normal
priority (0-15) processes. The default value is 0.
This special parameter is used by HP and is subject to change. Do not
change this parameter unless HP recommends that you do so.
PROCSECTCNT (A,G)
PROCSECTCNT sets the number of section descriptors that a process can
contain. Each section descriptor increases the fixed portion of the
process header by 32 bytes.
Set a value greater than the maximum number of image sections in any
section to be run, as indicated by the linkage memory allocation map
for the image.
PSEUDOLOA
(VAX only) PSEUDOLOA specifies (in pages) the size of the PDA0 system
image. PSEUDOLOA is used to boot standalone BACKUP from magnetic tape.
This special parameter is used by HP and is subject to change. Do not
change this parameter unless HP recommends that you do so.
PU_OPTIONS
PU_OPTIONS is reserved for HP use only.
QDSKINTERVAL
QDSKINTERVAL establishes, in seconds, the disk quorum polling interval.
The default value is 3.
QDSKVOTES
QDSKVOTES specifies the number of votes contributed by a quorum disk in
a cluster.
QUANTUM (A on Alpha and I64,D,M)
QUANTUM defines the following:
- Processor time: maximum amount of processor time a process can
receive before control passes to another process of equal priority that
is ready to compute
- Balance set residency: minimum amount of service a compute-state
process must receive before being swapped out to secondary storage
RAD_SUPPORT (G)
(Alpha only) RAD_SUPPORT enables RAD-aware code to be executed on
systems that support Resource Affinity Domains (RADs); for example,
AlphaServer GS160 systems. A RAD is a set of hardware components (CPUs,
memory, and I/O) with common access characteristics.
Bits are defined in the RAD_SUPPORT parameter as follows:
RAD_SUPPORT (default is 79; bits 0-3 and 6 are set)
___________________________________________________
3 2 2 2 2 1 1
1 8 7 4 3 6 5 8 7 0
+-----+-----+-----------+-----------+-----------+
|00|00| skip|ss|gg|ww|pp|00|00|00|00|0p|df|cr|ae|
+-----+-----+-----------+-----------+-----------+
Bit 0 (e): Enable - Enables RAD support
Bit 1 (a): Affinity - Enables Soft RAD Affinity (SRA) scheduling
Also enables the interpretation of the skip
bits, 24-27.
Bit 2 (r): Replicate - Enables system-space code replication
Bit 3 (c): Copy - Enables copy on soft fault
Bit 4 (f): Fault - Enables special page fault allocation
Also enables the interpretation of the
allocation bits, 16-23.
Bit 5 (d): Debug - Reserved to HP
Bit 6 (p): Pool - Enables per-RAD non-paged pool
Bits 7-15: - Reserved to HP
Bits 16-23: - If bit 4 is set, bits 16-23 are interpreted
as follows:
Bits 16,17 (pp): Process = Pagefault on process (non global)
pages
Bits 18,19 (ww): Swapper = Swapper's allocation of pages for
processes
Bits 20,21 (gg): Global = Pagefault on global pages
Bits 22,23 (ss): System = Pagefault on system space pages
Encodings for pp, ww, gg, ss:
Current (0) - allocate PFNs from the current CPU's RAD
Random (1) - allocate PFNs using the "random" algorithm
Base (2) - allocate PFNs from the operating system's "base" RAD
Home (3) - allocate PFNs from the current process's home RAD
If bits 16-23 are 0, the defaults for pp, ww, gg, ss are interpreted
as follows:
Process = home RAD
Swapper = current RAD (also sets home RAD for process)
Global = random RAD
System = base RAD
Bits 24-27: - If bit 1 is set, bits 24-27 are interpreted
as a skip count value (power of 2). Example: If
bits 24-27 contain a 3, the skip count is 8.
If bits 24-27 contain a 5, the skip count is 32.
If bits 24-27 are 0, the default of 16 is used
as the skip count.
Bits 28-31: - Reserved to HP
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For more information about using OpenVMS RAD features, see the
OpenVMS Alpha Galaxy and Partitioning Guide.
REALTIME_SPTS (D,G,M)
(VAX only) REALTIME_SPTS reserves a number of system page table entries
for mapping connect-to-interrupt processes into system space. This
value should normally remain at the default (0) in an environment that
is not real-time. Where connect-to-interrupt processes do use the
system, this value should represent the maximum number of pages that
all concurrent connect-to-interrupt processes must map into system
space. See the OpenVMS VAX Device Support Manual (archived).
RECNXINTERVAL (A on Alpha and I64,D)
RECNXINTERVAL establishes the polling interval, in seconds, during
which to attempt reconnection to a remote system.
RESALLOC
RESALLOC controls whether resource allocation checking is performed.
The default value of 0 disables resource allocation checking.
